401721880

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{149}}^1\times {\mathrm{9629}}^1$

素因数の和:9796

約数の個数: 64

約数和(自身を含む): 1040040000

約数和(自身を除く): 638318120

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 149, 280, 298, 596, 745, 1043, 1192, 1490, 2086, 2980, 4172, 5215, 5960, 8344, 9629, 10430, 19258, 20860, 38516, 41720, 48145, 67403, 77032, 96290, 134806, 192580, 269612, 337015, 385160, 539224, 674030, 1348060, 1434721, 2696120, 2869442, 5738884, 7173605, 10043047, 11477768, 14347210, 20086094, 28694420, 40172188, 50215235, 57388840, 80344376, 100430470, 200860940, 401721880]

約数ペア:

[(1, 401721880), (2, 200860940), (4, 100430470), (5, 80344376), (7, 57388840), (8, 50215235), (10, 40172188), (14, 28694420), (20, 20086094), (28, 14347210), (35, 11477768), (40, 10043047), (56, 7173605), (70, 5738884), (140, 2869442), (149, 2696120), (280, 1434721), (298, 1348060), (596, 674030), (745, 539224), (1043, 385160), (1192, 337015), (1490, 269612), (2086, 192580), (2980, 134806), (4172, 96290), (5215, 77032), (5960, 67403), (8344, 48145), (9629, 41720), (10430, 38516), (19258, 20860)]