20532500

素因数分解:

$2^2\times 5^4\times {\mathrm{43}}^1\times {\mathrm{191}}^1$

素因数の和:258

約数の個数: 60

約数和(自身を含む): 46185216

約数和(自身を除く): 25652716

約数列:

[1, 2, 4, 5, 10, 20, 25, 43, 50, 86, 100, 125, 172, 191, 215, 250, 382, 430, 500, 625, 764, 860, 955, 1075, 1250, 1910, 2150, 2500, 3820, 4300, 4775, 5375, 8213, 9550, 10750, 16426, 19100, 21500, 23875, 26875, 32852, 41065, 47750, 53750, 82130, 95500, 107500, 119375, 164260, 205325, 238750, 410650, 477500, 821300, 1026625, 2053250, 4106500, 5133125, 10266250, 20532500]

約数ペア:

[(1, 20532500), (2, 10266250), (4, 5133125), (5, 4106500), (10, 2053250), (20, 1026625), (25, 821300), (43, 477500), (50, 410650), (86, 238750), (100, 205325), (125, 164260), (172, 119375), (191, 107500), (215, 95500), (250, 82130), (382, 53750), (430, 47750), (500, 41065), (625, 32852), (764, 26875), (860, 23875), (955, 21500), (1075, 19100), (1250, 16426), (1910, 10750), (2150, 9550), (2500, 8213), (3820, 5375), (4300, 4775)]