31820221420

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{431}}^1\times {\mathrm{283957}}^1$

素因数の和:284410

約数の個数: 48

約数和(自身を含む): 72129875328

約数和(自身を除く): 40309653908

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 431, 862, 1724, 2155, 4310, 5603, 8620, 11206, 22412, 28015, 56030, 112060, 283957, 567914, 1135828, 1419785, 2839570, 3691441, 5679140, 7382882, 14765764, 18457205, 36914410, 73828820, 122385467, 244770934, 489541868, 611927335, 1223854670, 1591011071, 2447709340, 3182022142, 6364044284, 7955055355, 15910110710, 31820221420]

約数ペア:

[(1, 31820221420), (2, 15910110710), (4, 7955055355), (5, 6364044284), (10, 3182022142), (13, 2447709340), (20, 1591011071), (26, 1223854670), (52, 611927335), (65, 489541868), (130, 244770934), (260, 122385467), (431, 73828820), (862, 36914410), (1724, 18457205), (2155, 14765764), (4310, 7382882), (5603, 5679140), (8620, 3691441), (11206, 2839570), (22412, 1419785), (28015, 1135828), (56030, 567914), (112060, 283957)]