21515500

素因数分解:

$2^2\times 5^3\times {\mathrm{37}}^1\times {\mathrm{1163}}^1$

素因数の和:1219

約数の個数: 48

約数和(自身を含む): 48301344

約数和(自身を除く): 26785844

約数列:

[1, 2, 4, 5, 10, 20, 25, 37, 50, 74, 100, 125, 148, 185, 250, 370, 500, 740, 925, 1163, 1850, 2326, 3700, 4625, 4652, 5815, 9250, 11630, 18500, 23260, 29075, 43031, 58150, 86062, 116300, 145375, 172124, 215155, 290750, 430310, 581500, 860620, 1075775, 2151550, 4303100, 5378875, 10757750, 21515500]

約数ペア:

[(1, 21515500), (2, 10757750), (4, 5378875), (5, 4303100), (10, 2151550), (20, 1075775), (25, 860620), (37, 581500), (50, 430310), (74, 290750), (100, 215155), (125, 172124), (148, 145375), (185, 116300), (250, 86062), (370, 58150), (500, 43031), (740, 29075), (925, 23260), (1163, 18500), (1850, 11630), (2326, 9250), (3700, 5815), (4625, 4652)]