20187990

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{5471}}^1$

素因数の和:5525

約数の個数: 48

約数和(自身を含む): 53778816

約数和(自身を除く): 33590826

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 41, 45, 82, 90, 123, 205, 246, 369, 410, 615, 738, 1230, 1845, 3690, 5471, 10942, 16413, 27355, 32826, 49239, 54710, 82065, 98478, 164130, 224311, 246195, 448622, 492390, 672933, 1121555, 1345866, 2018799, 2243110, 3364665, 4037598, 6729330, 10093995, 20187990]

約数ペア:

[(1, 20187990), (2, 10093995), (3, 6729330), (5, 4037598), (6, 3364665), (9, 2243110), (10, 2018799), (15, 1345866), (18, 1121555), (30, 672933), (41, 492390), (45, 448622), (82, 246195), (90, 224311), (123, 164130), (205, 98478), (246, 82065), (369, 54710), (410, 49239), (615, 32826), (738, 27355), (1230, 16413), (1845, 10942), (3690, 5471)]