278825690

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{2671}}^1$

素因数の和:2775

約数の個数: 64

約数和(自身を含む): 597929472

約数和(自身を除く): 319103782

約数列:

[1, 2, 5, 10, 11, 13, 22, 26, 55, 65, 73, 110, 130, 143, 146, 286, 365, 715, 730, 803, 949, 1430, 1606, 1898, 2671, 4015, 4745, 5342, 8030, 9490, 10439, 13355, 20878, 26710, 29381, 34723, 52195, 58762, 69446, 104390, 146905, 173615, 194983, 293810, 347230, 381953, 389966, 763906, 974915, 1909765, 1949830, 2144813, 2534779, 3819530, 4289626, 5069558, 10724065, 12673895, 21448130, 25347790, 27882569, 55765138, 139412845, 278825690]

約数ペア:

[(1, 278825690), (2, 139412845), (5, 55765138), (10, 27882569), (11, 25347790), (13, 21448130), (22, 12673895), (26, 10724065), (55, 5069558), (65, 4289626), (73, 3819530), (110, 2534779), (130, 2144813), (143, 1949830), (146, 1909765), (286, 974915), (365, 763906), (715, 389966), (730, 381953), (803, 347230), (949, 293810), (1430, 194983), (1606, 173615), (1898, 146905), (2671, 104390), (4015, 69446), (4745, 58762), (5342, 52195), (8030, 34723), (9490, 29381), (10439, 26710), (13355, 20878)]