408907940

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{103}}^1\times {\mathrm{4051}}^1$

素因数の和:4177

約数の個数: 72

約数和(自身を含む): 1008850752

約数和(自身を除く): 599942812

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 103, 140, 196, 206, 245, 412, 490, 515, 721, 980, 1030, 1442, 2060, 2884, 3605, 4051, 5047, 7210, 8102, 10094, 14420, 16204, 20188, 20255, 25235, 28357, 40510, 50470, 56714, 81020, 100940, 113428, 141785, 198499, 283570, 396998, 417253, 567140, 793996, 834506, 992495, 1669012, 1984990, 2086265, 2920771, 3969980, 4172530, 5841542, 8345060, 11683084, 14603855, 20445397, 29207710, 40890794, 58415420, 81781588, 102226985, 204453970, 408907940]

約数ペア:

[(1, 408907940), (2, 204453970), (4, 102226985), (5, 81781588), (7, 58415420), (10, 40890794), (14, 29207710), (20, 20445397), (28, 14603855), (35, 11683084), (49, 8345060), (70, 5841542), (98, 4172530), (103, 3969980), (140, 2920771), (196, 2086265), (206, 1984990), (245, 1669012), (412, 992495), (490, 834506), (515, 793996), (721, 567140), (980, 417253), (1030, 396998), (1442, 283570), (2060, 198499), (2884, 141785), (3605, 113428), (4051, 100940), (5047, 81020), (7210, 56714), (8102, 50470), (10094, 40510), (14420, 28357), (16204, 25235), (20188, 20255)]