20180380

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{31}}^1\times {\mathrm{269}}^1$

素因数の和:331

約数の個数: 72

約数和(自身を含む): 48263040

約数和(自身を除く): 28082660

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 31, 44, 55, 62, 110, 121, 124, 155, 220, 242, 269, 310, 341, 484, 538, 605, 620, 682, 1076, 1210, 1345, 1364, 1705, 2420, 2690, 2959, 3410, 3751, 5380, 5918, 6820, 7502, 8339, 11836, 14795, 15004, 16678, 18755, 29590, 32549, 33356, 37510, 41695, 59180, 65098, 75020, 83390, 91729, 130196, 162745, 166780, 183458, 325490, 366916, 458645, 650980, 917290, 1009019, 1834580, 2018038, 4036076, 5045095, 10090190, 20180380]

約数ペア:

[(1, 20180380), (2, 10090190), (4, 5045095), (5, 4036076), (10, 2018038), (11, 1834580), (20, 1009019), (22, 917290), (31, 650980), (44, 458645), (55, 366916), (62, 325490), (110, 183458), (121, 166780), (124, 162745), (155, 130196), (220, 91729), (242, 83390), (269, 75020), (310, 65098), (341, 59180), (484, 41695), (538, 37510), (605, 33356), (620, 32549), (682, 29590), (1076, 18755), (1210, 16678), (1345, 15004), (1364, 14795), (1705, 11836), (2420, 8339), (2690, 7502), (2959, 6820), (3410, 5918), (3751, 5380)]