28198575

素因数分解:

$3^2\times 5^2\times {\mathrm{23}}^1\times {\mathrm{5449}}^1$

素因数の和:5488

約数の個数: 36

約数和(自身を含む): 52712400

約数和(自身を除く): 24513825

約数列:

[1, 3, 5, 9, 15, 23, 25, 45, 69, 75, 115, 207, 225, 345, 575, 1035, 1725, 5175, 5449, 16347, 27245, 49041, 81735, 125327, 136225, 245205, 375981, 408675, 626635, 1127943, 1226025, 1879905, 3133175, 5639715, 9399525, 28198575]

約数ペア:

[(1, 28198575), (3, 9399525), (5, 5639715), (9, 3133175), (15, 1879905), (23, 1226025), (25, 1127943), (45, 626635), (69, 408675), (75, 375981), (115, 245205), (207, 136225), (225, 125327), (345, 81735), (575, 49041), (1035, 27245), (1725, 16347), (5175, 5449)]