405456440

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{79}}^1\times {\mathrm{4139}}^1$

素因数の和:4260

約数の個数: 64

約数和(自身を含む): 953856000

約数和(自身を除く): 548399560

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 79, 124, 155, 158, 248, 310, 316, 395, 620, 632, 790, 1240, 1580, 2449, 3160, 4139, 4898, 8278, 9796, 12245, 16556, 19592, 20695, 24490, 33112, 41390, 48980, 82780, 97960, 128309, 165560, 256618, 326981, 513236, 641545, 653962, 1026472, 1283090, 1307924, 1634905, 2566180, 2615848, 3269810, 5132360, 6539620, 10136411, 13079240, 20272822, 40545644, 50682055, 81091288, 101364110, 202728220, 405456440]

約数ペア:

[(1, 405456440), (2, 202728220), (4, 101364110), (5, 81091288), (8, 50682055), (10, 40545644), (20, 20272822), (31, 13079240), (40, 10136411), (62, 6539620), (79, 5132360), (124, 3269810), (155, 2615848), (158, 2566180), (248, 1634905), (310, 1307924), (316, 1283090), (395, 1026472), (620, 653962), (632, 641545), (790, 513236), (1240, 326981), (1580, 256618), (2449, 165560), (3160, 128309), (4139, 97960), (4898, 82780), (8278, 48980), (9796, 41390), (12245, 33112), (16556, 24490), (19592, 20695)]