20801970

素因数分解:

$2^1\times 3^2\times 5^1\times 7^2\times {\mathrm{53}}^1\times {\mathrm{89}}^1$

素因数の和:169

約数の個数: 144

約数和(自身を含む): 64822680

約数和(自身を除く): 44020710

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 21, 30, 35, 42, 45, 49, 53, 63, 70, 89, 90, 98, 105, 106, 126, 147, 159, 178, 210, 245, 265, 267, 294, 315, 318, 371, 441, 445, 477, 490, 530, 534, 623, 630, 735, 742, 795, 801, 882, 890, 954, 1113, 1246, 1335, 1470, 1590, 1602, 1855, 1869, 2205, 2226, 2385, 2597, 2670, 3115, 3339, 3710, 3738, 4005, 4361, 4410, 4717, 4770, 5194, 5565, 5607, 6230, 6678, 7791, 8010, 8722, 9345, 9434, 11130, 11214, 12985, 13083, 14151, 15582, 16695, 18690, 21805, 23373, 23585, 25970, 26166, 28035, 28302, 33019, 33390, 38955, 39249, 42453, 43610, 46746, 47170, 56070, 65415, 66038, 70755, 77910, 78498, 84906, 99057, 116865, 130830, 141510, 165095, 196245, 198114, 212265, 231133, 233730, 297171, 330190, 392490, 424530, 462266, 495285, 594342, 693399, 990570, 1155665, 1386798, 1485855, 2080197, 2311330, 2971710, 3466995, 4160394, 6933990, 10400985, 20801970]

約数ペア:

[(1, 20801970), (2, 10400985), (3, 6933990), (5, 4160394), (6, 3466995), (7, 2971710), (9, 2311330), (10, 2080197), (14, 1485855), (15, 1386798), (18, 1155665), (21, 990570), (30, 693399), (35, 594342), (42, 495285), (45, 462266), (49, 424530), (53, 392490), (63, 330190), (70, 297171), (89, 233730), (90, 231133), (98, 212265), (105, 198114), (106, 196245), (126, 165095), (147, 141510), (159, 130830), (178, 116865), (210, 99057), (245, 84906), (265, 78498), (267, 77910), (294, 70755), (315, 66038), (318, 65415), (371, 56070), (441, 47170), (445, 46746), (477, 43610), (490, 42453), (530, 39249), (534, 38955), (623, 33390), (630, 33019), (735, 28302), (742, 28035), (795, 26166), (801, 25970), (882, 23585), (890, 23373), (954, 21805), (1113, 18690), (1246, 16695), (1335, 15582), (1470, 14151), (1590, 13083), (1602, 12985), (1855, 11214), (1869, 11130), (2205, 9434), (2226, 9345), (2385, 8722), (2597, 8010), (2670, 7791), (3115, 6678), (3339, 6230), (3710, 5607), (3738, 5565), (4005, 5194), (4361, 4770), (4410, 4717)]