20615216

素因数分解:

$2^4\times {\mathrm{37}}^1\times {\mathrm{97}}^1\times {\mathrm{359}}^1$

素因数の和:501

約数の個数: 40

約数和(自身を含む): 41559840

約数和(自身を除く): 20944624

約数列:

[1, 2, 4, 8, 16, 37, 74, 97, 148, 194, 296, 359, 388, 592, 718, 776, 1436, 1552, 2872, 3589, 5744, 7178, 13283, 14356, 26566, 28712, 34823, 53132, 57424, 69646, 106264, 139292, 212528, 278584, 557168, 1288451, 2576902, 5153804, 10307608, 20615216]

約数ペア:

[(1, 20615216), (2, 10307608), (4, 5153804), (8, 2576902), (16, 1288451), (37, 557168), (74, 278584), (97, 212528), (148, 139292), (194, 106264), (296, 69646), (359, 57424), (388, 53132), (592, 34823), (718, 28712), (776, 26566), (1436, 14356), (1552, 13283), (2872, 7178), (3589, 5744)]