21251100

素因数分解:

$2^2\times 3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{5449}}^1$

素因数の和:5479

約数の個数: 72

約数和(自身を含む): 66228400

約数和(自身を除く): 44977300

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 25, 26, 30, 39, 50, 52, 60, 65, 75, 78, 100, 130, 150, 156, 195, 260, 300, 325, 390, 650, 780, 975, 1300, 1950, 3900, 5449, 10898, 16347, 21796, 27245, 32694, 54490, 65388, 70837, 81735, 108980, 136225, 141674, 163470, 212511, 272450, 283348, 326940, 354185, 408675, 425022, 544900, 708370, 817350, 850044, 1062555, 1416740, 1634700, 1770925, 2125110, 3541850, 4250220, 5312775, 7083700, 10625550, 21251100]

約数ペア:

[(1, 21251100), (2, 10625550), (3, 7083700), (4, 5312775), (5, 4250220), (6, 3541850), (10, 2125110), (12, 1770925), (13, 1634700), (15, 1416740), (20, 1062555), (25, 850044), (26, 817350), (30, 708370), (39, 544900), (50, 425022), (52, 408675), (60, 354185), (65, 326940), (75, 283348), (78, 272450), (100, 212511), (130, 163470), (150, 141674), (156, 136225), (195, 108980), (260, 81735), (300, 70837), (325, 65388), (390, 54490), (650, 32694), (780, 27245), (975, 21796), (1300, 16347), (1950, 10898), (3900, 5449)]