405564180

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{137947}}^1$

素因数の和:137973

約数の個数: 72

約数和(自身を含む): 1320990048

約数和(自身を除く): 915425868

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 49, 60, 70, 84, 98, 105, 140, 147, 196, 210, 245, 294, 420, 490, 588, 735, 980, 1470, 2940, 137947, 275894, 413841, 551788, 689735, 827682, 965629, 1379470, 1655364, 1931258, 2069205, 2758940, 2896887, 3862516, 4138410, 4828145, 5793774, 6759403, 8276820, 9656290, 11587548, 13518806, 14484435, 19312580, 20278209, 27037612, 28968870, 33797015, 40556418, 57937740, 67594030, 81112836, 101391045, 135188060, 202782090, 405564180]

約数ペア:

[(1, 405564180), (2, 202782090), (3, 135188060), (4, 101391045), (5, 81112836), (6, 67594030), (7, 57937740), (10, 40556418), (12, 33797015), (14, 28968870), (15, 27037612), (20, 20278209), (21, 19312580), (28, 14484435), (30, 13518806), (35, 11587548), (42, 9656290), (49, 8276820), (60, 6759403), (70, 5793774), (84, 4828145), (98, 4138410), (105, 3862516), (140, 2896887), (147, 2758940), (196, 2069205), (210, 1931258), (245, 1655364), (294, 1379470), (420, 965629), (490, 827682), (588, 689735), (735, 551788), (980, 413841), (1470, 275894), (2940, 137947)]