31260840

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{691}}^1$

素因数の和:747

約数の個数: 128

約数和(自身を含む): 104630400

約数和(自身を除く): 73369560

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 20, 24, 26, 29, 30, 39, 40, 52, 58, 60, 65, 78, 87, 104, 116, 120, 130, 145, 156, 174, 195, 232, 260, 290, 312, 348, 377, 390, 435, 520, 580, 691, 696, 754, 780, 870, 1131, 1160, 1382, 1508, 1560, 1740, 1885, 2073, 2262, 2764, 3016, 3455, 3480, 3770, 4146, 4524, 5528, 5655, 6910, 7540, 8292, 8983, 9048, 10365, 11310, 13820, 15080, 16584, 17966, 20039, 20730, 22620, 26949, 27640, 35932, 40078, 41460, 44915, 45240, 53898, 60117, 71864, 80156, 82920, 89830, 100195, 107796, 120234, 134745, 160312, 179660, 200390, 215592, 240468, 260507, 269490, 300585, 359320, 400780, 480936, 521014, 538980, 601170, 781521, 801560, 1042028, 1077960, 1202340, 1302535, 1563042, 2084056, 2404680, 2605070, 3126084, 3907605, 5210140, 6252168, 7815210, 10420280, 15630420, 31260840]

約数ペア:

[(1, 31260840), (2, 15630420), (3, 10420280), (4, 7815210), (5, 6252168), (6, 5210140), (8, 3907605), (10, 3126084), (12, 2605070), (13, 2404680), (15, 2084056), (20, 1563042), (24, 1302535), (26, 1202340), (29, 1077960), (30, 1042028), (39, 801560), (40, 781521), (52, 601170), (58, 538980), (60, 521014), (65, 480936), (78, 400780), (87, 359320), (104, 300585), (116, 269490), (120, 260507), (130, 240468), (145, 215592), (156, 200390), (174, 179660), (195, 160312), (232, 134745), (260, 120234), (290, 107796), (312, 100195), (348, 89830), (377, 82920), (390, 80156), (435, 71864), (520, 60117), (580, 53898), (691, 45240), (696, 44915), (754, 41460), (780, 40078), (870, 35932), (1131, 27640), (1160, 26949), (1382, 22620), (1508, 20730), (1560, 20039), (1740, 17966), (1885, 16584), (2073, 15080), (2262, 13820), (2764, 11310), (3016, 10365), (3455, 9048), (3480, 8983), (3770, 8292), (4146, 7540), (4524, 6910), (5528, 5655)]