20102875

素因数分解:

$5^3\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{139}}^1$

素因数の和:256

約数の個数: 32

約数和(自身を含む): 27518400

約数和(自身を除く): 7415525

約数列:

[1, 5, 13, 25, 65, 89, 125, 139, 325, 445, 695, 1157, 1625, 1807, 2225, 3475, 5785, 9035, 11125, 12371, 17375, 28925, 45175, 61855, 144625, 160823, 225875, 309275, 804115, 1546375, 4020575, 20102875]

約数ペア:

[(1, 20102875), (5, 4020575), (13, 1546375), (25, 804115), (65, 309275), (89, 225875), (125, 160823), (139, 144625), (325, 61855), (445, 45175), (695, 28925), (1157, 17375), (1625, 12371), (1807, 11125), (2225, 9035), (3475, 5785)]