20980493660

素因数分解:

$2^2\times 5^1\times 7^3\times {\mathrm{101}}^1\times {\mathrm{107}}^1\times {\mathrm{283}}^1$

素因数の和:521

約数の個数: 192

約数和(自身を含む): 52559539200

約数和(自身を除く): 31579045540

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 101, 107, 140, 196, 202, 214, 245, 283, 343, 404, 428, 490, 505, 535, 566, 686, 707, 749, 980, 1010, 1070, 1132, 1372, 1414, 1415, 1498, 1715, 1981, 2020, 2140, 2828, 2830, 2996, 3430, 3535, 3745, 3962, 4949, 5243, 5660, 6860, 7070, 7490, 7924, 9898, 9905, 10486, 10807, 13867, 14140, 14980, 19796, 19810, 20972, 21614, 24745, 26215, 27734, 28583, 30281, 34643, 36701, 39620, 43228, 49490, 52430, 54035, 55468, 57166, 60562, 69286, 69335, 73402, 75649, 97069, 98980, 104860, 108070, 114332, 121124, 138572, 138670, 142915, 146804, 151298, 151405, 173215, 183505, 194138, 200081, 211967, 216140, 277340, 285830, 302596, 302810, 346430, 367010, 378245, 388276, 400162, 423934, 485345, 529543, 571660, 605620, 692860, 734020, 756490, 800324, 847868, 970690, 1000405, 1059086, 1059835, 1400567, 1483769, 1512980, 1941380, 2000810, 2118172, 2119670, 2647715, 2801134, 2967538, 3058381, 3706801, 4001620, 4239340, 5295430, 5602268, 5935076, 6116762, 7002835, 7413602, 7418845, 9803969, 10386383, 10590860, 12233524, 14005670, 14827204, 14837690, 15291905, 18534005, 19607938, 20772766, 21408667, 28011340, 29675380, 30583810, 37068010, 39215876, 41545532, 42817334, 49019845, 51931915, 61167620, 74136020, 85634668, 98039690, 103863830, 107043335, 149860669, 196079380, 207727660, 214086670, 299721338, 428173340, 599442676, 749303345, 1049024683, 1498606690, 2098049366, 2997213380, 4196098732, 5245123415, 10490246830, 20980493660]

約数ペア:

[(1, 20980493660), (2, 10490246830), (4, 5245123415), (5, 4196098732), (7, 2997213380), (10, 2098049366), (14, 1498606690), (20, 1049024683), (28, 749303345), (35, 599442676), (49, 428173340), (70, 299721338), (98, 214086670), (101, 207727660), (107, 196079380), (140, 149860669), (196, 107043335), (202, 103863830), (214, 98039690), (245, 85634668), (283, 74136020), (343, 61167620), (404, 51931915), (428, 49019845), (490, 42817334), (505, 41545532), (535, 39215876), (566, 37068010), (686, 30583810), (707, 29675380), (749, 28011340), (980, 21408667), (1010, 20772766), (1070, 19607938), (1132, 18534005), (1372, 15291905), (1414, 14837690), (1415, 14827204), (1498, 14005670), (1715, 12233524), (1981, 10590860), (2020, 10386383), (2140, 9803969), (2828, 7418845), (2830, 7413602), (2996, 7002835), (3430, 6116762), (3535, 5935076), (3745, 5602268), (3962, 5295430), (4949, 4239340), (5243, 4001620), (5660, 3706801), (6860, 3058381), (7070, 2967538), (7490, 2801134), (7924, 2647715), (9898, 2119670), (9905, 2118172), (10486, 2000810), (10807, 1941380), (13867, 1512980), (14140, 1483769), (14980, 1400567), (19796, 1059835), (19810, 1059086), (20972, 1000405), (21614, 970690), (24745, 847868), (26215, 800324), (27734, 756490), (28583, 734020), (30281, 692860), (34643, 605620), (36701, 571660), (39620, 529543), (43228, 485345), (49490, 423934), (52430, 400162), (54035, 388276), (55468, 378245), (57166, 367010), (60562, 346430), (69286, 302810), (69335, 302596), (73402, 285830), (75649, 277340), (97069, 216140), (98980, 211967), (104860, 200081), (108070, 194138), (114332, 183505), (121124, 173215), (138572, 151405), (138670, 151298), (142915, 146804)]