20148700

素因数分解:

$2^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{1409}}^1$

素因数の和:1447

約数の個数: 72

約数和(自身を含む): 51402960

約数和(自身を除く): 31254260

約数列:

[1, 2, 4, 5, 10, 11, 13, 20, 22, 25, 26, 44, 50, 52, 55, 65, 100, 110, 130, 143, 220, 260, 275, 286, 325, 550, 572, 650, 715, 1100, 1300, 1409, 1430, 2818, 2860, 3575, 5636, 7045, 7150, 14090, 14300, 15499, 18317, 28180, 30998, 35225, 36634, 61996, 70450, 73268, 77495, 91585, 140900, 154990, 183170, 201487, 309980, 366340, 387475, 402974, 457925, 774950, 805948, 915850, 1007435, 1549900, 1831700, 2014870, 4029740, 5037175, 10074350, 20148700]

約数ペア:

[(1, 20148700), (2, 10074350), (4, 5037175), (5, 4029740), (10, 2014870), (11, 1831700), (13, 1549900), (20, 1007435), (22, 915850), (25, 805948), (26, 774950), (44, 457925), (50, 402974), (52, 387475), (55, 366340), (65, 309980), (100, 201487), (110, 183170), (130, 154990), (143, 140900), (220, 91585), (260, 77495), (275, 73268), (286, 70450), (325, 61996), (550, 36634), (572, 35225), (650, 30998), (715, 28180), (1100, 18317), (1300, 15499), (1409, 14300), (1430, 14090), (2818, 7150), (2860, 7045), (3575, 5636)]