201981825

素因数分解:

$3^2\times 5^2\times {\mathrm{173}}^1\times {\mathrm{5189}}^1$

素因数の和:5378

約数の個数: 36

約数和(自身を含む): 363933180

約数和(自身を除く): 161951355

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 173, 225, 519, 865, 1557, 2595, 4325, 5189, 7785, 12975, 15567, 25945, 38925, 46701, 77835, 129725, 233505, 389175, 897697, 1167525, 2693091, 4488485, 8079273, 13465455, 22442425, 40396365, 67327275, 201981825]

約数ペア:

[(1, 201981825), (3, 67327275), (5, 40396365), (9, 22442425), (15, 13465455), (25, 8079273), (45, 4488485), (75, 2693091), (173, 1167525), (225, 897697), (519, 389175), (865, 233505), (1557, 129725), (2595, 77835), (4325, 46701), (5189, 38925), (7785, 25945), (12975, 15567)]