21400450

素因数分解:

$2^1\times 5^2\times {\mathrm{17}}^2\times {\mathrm{1481}}^1$

素因数の和:1527

約数の個数: 36

約数和(自身を含む): 42312582

約数和(自身を除く): 20912132

約数列:

[1, 2, 5, 10, 17, 25, 34, 50, 85, 170, 289, 425, 578, 850, 1445, 1481, 2890, 2962, 7225, 7405, 14450, 14810, 25177, 37025, 50354, 74050, 125885, 251770, 428009, 629425, 856018, 1258850, 2140045, 4280090, 10700225, 21400450]

約数ペア:

[(1, 21400450), (2, 10700225), (5, 4280090), (10, 2140045), (17, 1258850), (25, 856018), (34, 629425), (50, 428009), (85, 251770), (170, 125885), (289, 74050), (425, 50354), (578, 37025), (850, 25177), (1445, 14810), (1481, 14450), (2890, 7405), (2962, 7225)]