1387880

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{157}}^1$

素因数の和:198

約数の個数: 64

約数和(自身を含む): 3583440

約数和(自身を除く): 2195560

約数列:

[1, 2, 4, 5, 8, 10, 13, 17, 20, 26, 34, 40, 52, 65, 68, 85, 104, 130, 136, 157, 170, 221, 260, 314, 340, 442, 520, 628, 680, 785, 884, 1105, 1256, 1570, 1768, 2041, 2210, 2669, 3140, 4082, 4420, 5338, 6280, 8164, 8840, 10205, 10676, 13345, 16328, 20410, 21352, 26690, 34697, 40820, 53380, 69394, 81640, 106760, 138788, 173485, 277576, 346970, 693940, 1387880]

約数ペア:

[(1, 1387880), (2, 693940), (4, 346970), (5, 277576), (8, 173485), (10, 138788), (13, 106760), (17, 81640), (20, 69394), (26, 53380), (34, 40820), (40, 34697), (52, 26690), (65, 21352), (68, 20410), (85, 16328), (104, 13345), (130, 10676), (136, 10205), (157, 8840), (170, 8164), (221, 6280), (260, 5338), (314, 4420), (340, 4082), (442, 3140), (520, 2669), (628, 2210), (680, 2041), (785, 1768), (884, 1570), (1105, 1256)]