31102020

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{131}}^1\times {\mathrm{1319}}^1$

素因数の和:1465

約数の個数: 72

約数和(自身を含む): 95135040

約数和(自身を除く): 64033020

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 131, 180, 262, 393, 524, 655, 786, 1179, 1310, 1319, 1572, 1965, 2358, 2620, 2638, 3930, 3957, 4716, 5276, 5895, 6595, 7860, 7914, 11790, 11871, 13190, 15828, 19785, 23580, 23742, 26380, 39570, 47484, 59355, 79140, 118710, 172789, 237420, 345578, 518367, 691156, 863945, 1036734, 1555101, 1727890, 2073468, 2591835, 3110202, 3455780, 5183670, 6220404, 7775505, 10367340, 15551010, 31102020]

約数ペア:

[(1, 31102020), (2, 15551010), (3, 10367340), (4, 7775505), (5, 6220404), (6, 5183670), (9, 3455780), (10, 3110202), (12, 2591835), (15, 2073468), (18, 1727890), (20, 1555101), (30, 1036734), (36, 863945), (45, 691156), (60, 518367), (90, 345578), (131, 237420), (180, 172789), (262, 118710), (393, 79140), (524, 59355), (655, 47484), (786, 39570), (1179, 26380), (1310, 23742), (1319, 23580), (1572, 19785), (1965, 15828), (2358, 13190), (2620, 11871), (2638, 11790), (3930, 7914), (3957, 7860), (4716, 6595), (5276, 5895)]