20005901080

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{3581}}^1\times {\mathrm{12697}}^1$

素因数の和:16300

約数の個数: 64

約数和(自身を含む): 49122974880

約数和(自身を除く): 29117073800

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 3581, 7162, 12697, 14324, 17905, 25394, 28648, 35810, 39391, 50788, 63485, 71620, 78782, 101576, 126970, 139667, 143240, 157564, 196955, 253940, 279334, 315128, 393910, 507880, 558668, 698335, 787820, 1117336, 1396670, 1575640, 2793340, 5586680, 45467957, 90935914, 181871828, 227339785, 363743656, 454679570, 500147527, 909359140, 1000295054, 1818718280, 2000590108, 2500737635, 4001180216, 5001475270, 10002950540, 20005901080]

約数ペア:

[(1, 20005901080), (2, 10002950540), (4, 5001475270), (5, 4001180216), (8, 2500737635), (10, 2000590108), (11, 1818718280), (20, 1000295054), (22, 909359140), (40, 500147527), (44, 454679570), (55, 363743656), (88, 227339785), (110, 181871828), (220, 90935914), (440, 45467957), (3581, 5586680), (7162, 2793340), (12697, 1575640), (14324, 1396670), (17905, 1117336), (25394, 787820), (28648, 698335), (35810, 558668), (39391, 507880), (50788, 393910), (63485, 315128), (71620, 279334), (78782, 253940), (101576, 196955), (126970, 157564), (139667, 143240)]