21255950

素因数分解:

$2^1\times 5^2\times {\mathrm{17}}^2\times {\mathrm{1471}}^1$

素因数の和:1517

約数の個数: 36

約数和(自身を含む): 42027072

約数和(自身を除く): 20771122

約数列:

[1, 2, 5, 10, 17, 25, 34, 50, 85, 170, 289, 425, 578, 850, 1445, 1471, 2890, 2942, 7225, 7355, 14450, 14710, 25007, 36775, 50014, 73550, 125035, 250070, 425119, 625175, 850238, 1250350, 2125595, 4251190, 10627975, 21255950]

約数ペア:

[(1, 21255950), (2, 10627975), (5, 4251190), (10, 2125595), (17, 1250350), (25, 850238), (34, 625175), (50, 425119), (85, 250070), (170, 125035), (289, 73550), (425, 50014), (578, 36775), (850, 25007), (1445, 14710), (1471, 14450), (2890, 7355), (2942, 7225)]