21977565320

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{35951}}^1$

素因数の和:36039

約数の個数: 128

約数和(自身を含む): 55912550400

約数和(自身を除く): 33934985080

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 29, 31, 34, 40, 58, 62, 68, 85, 116, 124, 136, 145, 155, 170, 232, 248, 290, 310, 340, 493, 527, 580, 620, 680, 899, 986, 1054, 1160, 1240, 1798, 1972, 2108, 2465, 2635, 3596, 3944, 4216, 4495, 4930, 5270, 7192, 8990, 9860, 10540, 15283, 17980, 19720, 21080, 30566, 35951, 35960, 61132, 71902, 76415, 122264, 143804, 152830, 179755, 287608, 305660, 359510, 611167, 611320, 719020, 1042579, 1114481, 1222334, 1438040, 2085158, 2228962, 2444668, 3055835, 4170316, 4457924, 4889336, 5212895, 5572405, 6111670, 8340632, 8915848, 10425790, 11144810, 12223340, 17723843, 18946177, 20851580, 22289620, 24446680, 32319949, 35447686, 37892354, 41703160, 44579240, 64639898, 70895372, 75784708, 88619215, 94730885, 129279796, 141790744, 151569416, 161599745, 177238430, 189461770, 258559592, 323199490, 354476860, 378923540, 549439133, 646398980, 708953720, 757847080, 1098878266, 1292797960, 2197756532, 2747195665, 4395513064, 5494391330, 10988782660, 21977565320]

約数ペア:

[(1, 21977565320), (2, 10988782660), (4, 5494391330), (5, 4395513064), (8, 2747195665), (10, 2197756532), (17, 1292797960), (20, 1098878266), (29, 757847080), (31, 708953720), (34, 646398980), (40, 549439133), (58, 378923540), (62, 354476860), (68, 323199490), (85, 258559592), (116, 189461770), (124, 177238430), (136, 161599745), (145, 151569416), (155, 141790744), (170, 129279796), (232, 94730885), (248, 88619215), (290, 75784708), (310, 70895372), (340, 64639898), (493, 44579240), (527, 41703160), (580, 37892354), (620, 35447686), (680, 32319949), (899, 24446680), (986, 22289620), (1054, 20851580), (1160, 18946177), (1240, 17723843), (1798, 12223340), (1972, 11144810), (2108, 10425790), (2465, 8915848), (2635, 8340632), (3596, 6111670), (3944, 5572405), (4216, 5212895), (4495, 4889336), (4930, 4457924), (5270, 4170316), (7192, 3055835), (8990, 2444668), (9860, 2228962), (10540, 2085158), (15283, 1438040), (17980, 1222334), (19720, 1114481), (21080, 1042579), (30566, 719020), (35951, 611320), (35960, 611167), (61132, 359510), (71902, 305660), (76415, 287608), (122264, 179755), (143804, 152830)]