4020575

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{139}}^1$

素因数の和:251

約数の個数: 24

約数和(自身を含む): 5468400

約数和(自身を除く): 1447825

約数列:

[1, 5, 13, 25, 65, 89, 139, 325, 445, 695, 1157, 1807, 2225, 3475, 5785, 9035, 12371, 28925, 45175, 61855, 160823, 309275, 804115, 4020575]

約数ペア:

[(1, 4020575), (5, 804115), (13, 309275), (25, 160823), (65, 61855), (89, 45175), (139, 28925), (325, 12371), (445, 9035), (695, 5785), (1157, 3475), (1807, 2225)]