20565787580

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{149}}^1\times {\mathrm{7477}}^1$

素因数の和:7719

約数の個数: 96

約数和(自身を含む): 47488291200

約数和(自身を除く): 26922503620

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 71, 130, 142, 149, 260, 284, 298, 355, 596, 710, 745, 923, 1420, 1490, 1846, 1937, 2980, 3692, 3874, 4615, 7477, 7748, 9230, 9685, 10579, 14954, 18460, 19370, 21158, 29908, 37385, 38740, 42316, 52895, 74770, 97201, 105790, 137527, 149540, 194402, 211580, 275054, 388804, 486005, 530867, 550108, 687635, 972010, 1061734, 1114073, 1375270, 1944020, 2123468, 2228146, 2654335, 2750540, 4456292, 5308670, 5570365, 6901271, 10617340, 11140730, 13802542, 14482949, 22281460, 27605084, 28965898, 34506355, 57931796, 69012710, 72414745, 79099183, 138025420, 144829490, 158198366, 289658980, 316396732, 395495915, 790991830, 1028289379, 1581983660, 2056578758, 4113157516, 5141446895, 10282893790, 20565787580]

約数ペア:

[(1, 20565787580), (2, 10282893790), (4, 5141446895), (5, 4113157516), (10, 2056578758), (13, 1581983660), (20, 1028289379), (26, 790991830), (52, 395495915), (65, 316396732), (71, 289658980), (130, 158198366), (142, 144829490), (149, 138025420), (260, 79099183), (284, 72414745), (298, 69012710), (355, 57931796), (596, 34506355), (710, 28965898), (745, 27605084), (923, 22281460), (1420, 14482949), (1490, 13802542), (1846, 11140730), (1937, 10617340), (2980, 6901271), (3692, 5570365), (3874, 5308670), (4615, 4456292), (7477, 2750540), (7748, 2654335), (9230, 2228146), (9685, 2123468), (10579, 1944020), (14954, 1375270), (18460, 1114073), (19370, 1061734), (21158, 972010), (29908, 687635), (37385, 550108), (38740, 530867), (42316, 486005), (52895, 388804), (74770, 275054), (97201, 211580), (105790, 194402), (137527, 149540)]