20122072040

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{397}}^1\times {\mathrm{181019}}^1$

素因数の和:181434

約数の個数: 64

約数和(自身を含む): 51873091200

約数和(自身を除く): 31751019160

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 397, 794, 1588, 1985, 2779, 3176, 3970, 5558, 7940, 11116, 13895, 15880, 22232, 27790, 55580, 111160, 181019, 362038, 724076, 905095, 1267133, 1448152, 1810190, 2534266, 3620380, 5068532, 6335665, 7240760, 10137064, 12671330, 25342660, 50685320, 71864543, 143729086, 287458172, 359322715, 503051801, 574916344, 718645430, 1006103602, 1437290860, 2012207204, 2515259005, 2874581720, 4024414408, 5030518010, 10061036020, 20122072040]

約数ペア:

[(1, 20122072040), (2, 10061036020), (4, 5030518010), (5, 4024414408), (7, 2874581720), (8, 2515259005), (10, 2012207204), (14, 1437290860), (20, 1006103602), (28, 718645430), (35, 574916344), (40, 503051801), (56, 359322715), (70, 287458172), (140, 143729086), (280, 71864543), (397, 50685320), (794, 25342660), (1588, 12671330), (1985, 10137064), (2779, 7240760), (3176, 6335665), (3970, 5068532), (5558, 3620380), (7940, 2534266), (11116, 1810190), (13895, 1448152), (15880, 1267133), (22232, 905095), (27790, 724076), (55580, 362038), (111160, 181019)]