204985640

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{165311}}^1$

素因数の和:165353

約数の個数: 32

約数和(自身を含む): 476098560

約数和(自身を除く): 271112920

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 165311, 330622, 661244, 826555, 1322488, 1653110, 3306220, 5124641, 6612440, 10249282, 20498564, 25623205, 40997128, 51246410, 102492820, 204985640]

約数ペア:

[(1, 204985640), (2, 102492820), (4, 51246410), (5, 40997128), (8, 25623205), (10, 20498564), (20, 10249282), (31, 6612440), (40, 5124641), (62, 3306220), (124, 1653110), (155, 1322488), (248, 826555), (310, 661244), (620, 330622), (1240, 165311)]