20627500

素因数分解:

$2^2\times 5^4\times {\mathrm{37}}^1\times {\mathrm{223}}^1$

素因数の和:284

約数の個数: 60

約数和(自身を含む): 46535104

約数和(自身を除く): 25907604

約数列:

[1, 2, 4, 5, 10, 20, 25, 37, 50, 74, 100, 125, 148, 185, 223, 250, 370, 446, 500, 625, 740, 892, 925, 1115, 1250, 1850, 2230, 2500, 3700, 4460, 4625, 5575, 8251, 9250, 11150, 16502, 18500, 22300, 23125, 27875, 33004, 41255, 46250, 55750, 82510, 92500, 111500, 139375, 165020, 206275, 278750, 412550, 557500, 825100, 1031375, 2062750, 4125500, 5156875, 10313750, 20627500]

約数ペア:

[(1, 20627500), (2, 10313750), (4, 5156875), (5, 4125500), (10, 2062750), (20, 1031375), (25, 825100), (37, 557500), (50, 412550), (74, 278750), (100, 206275), (125, 165020), (148, 139375), (185, 111500), (223, 92500), (250, 82510), (370, 55750), (446, 46250), (500, 41255), (625, 33004), (740, 27875), (892, 23125), (925, 22300), (1115, 18500), (1250, 16502), (1850, 11150), (2230, 9250), (2500, 8251), (3700, 5575), (4460, 4625)]