20938710

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{1013}}^1$

素因数の和:1089

約数の個数: 64

約数和(自身を含む): 55194048

約数和(自身を除く): 34255338

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 53, 65, 78, 106, 130, 159, 195, 265, 318, 390, 530, 689, 795, 1013, 1378, 1590, 2026, 2067, 3039, 3445, 4134, 5065, 6078, 6890, 10130, 10335, 13169, 15195, 20670, 26338, 30390, 39507, 53689, 65845, 79014, 107378, 131690, 161067, 197535, 268445, 322134, 395070, 536890, 697957, 805335, 1395914, 1610670, 2093871, 3489785, 4187742, 6979570, 10469355, 20938710]

約数ペア:

[(1, 20938710), (2, 10469355), (3, 6979570), (5, 4187742), (6, 3489785), (10, 2093871), (13, 1610670), (15, 1395914), (26, 805335), (30, 697957), (39, 536890), (53, 395070), (65, 322134), (78, 268445), (106, 197535), (130, 161067), (159, 131690), (195, 107378), (265, 79014), (318, 65845), (390, 53689), (530, 39507), (689, 30390), (795, 26338), (1013, 20670), (1378, 15195), (1590, 13169), (2026, 10335), (2067, 10130), (3039, 6890), (3445, 6078), (4134, 5065)]