213014020

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{79}}^1\times {\mathrm{4349}}^1$

素因数の和:4468

約数の個数: 48

約数和(自身を含む): 467712000

約数和(自身を除く): 254697980

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 79, 124, 155, 158, 310, 316, 395, 620, 790, 1580, 2449, 4349, 4898, 8698, 9796, 12245, 17396, 21745, 24490, 43490, 48980, 86980, 134819, 269638, 343571, 539276, 674095, 687142, 1348190, 1374284, 1717855, 2696380, 3435710, 6871420, 10650701, 21301402, 42602804, 53253505, 106507010, 213014020]

約数ペア:

[(1, 213014020), (2, 106507010), (4, 53253505), (5, 42602804), (10, 21301402), (20, 10650701), (31, 6871420), (62, 3435710), (79, 2696380), (124, 1717855), (155, 1374284), (158, 1348190), (310, 687142), (316, 674095), (395, 539276), (620, 343571), (790, 269638), (1580, 134819), (2449, 86980), (4349, 48980), (4898, 43490), (8698, 24490), (9796, 21745), (12245, 17396)]