400814820

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{318107}}^1$

素因数の和:318129

約数の個数: 72

約数和(自身を含む): 1389495744

約数和(自身を除く): 988680924

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 180, 210, 252, 315, 420, 630, 1260, 318107, 636214, 954321, 1272428, 1590535, 1908642, 2226749, 2862963, 3181070, 3817284, 4453498, 4771605, 5725926, 6362140, 6680247, 8906996, 9543210, 11133745, 11451852, 13360494, 14314815, 19086420, 20040741, 22267490, 26720988, 28629630, 33401235, 40081482, 44534980, 57259260, 66802470, 80162964, 100203705, 133604940, 200407410, 400814820]

約数ペア:

[(1, 400814820), (2, 200407410), (3, 133604940), (4, 100203705), (5, 80162964), (6, 66802470), (7, 57259260), (9, 44534980), (10, 40081482), (12, 33401235), (14, 28629630), (15, 26720988), (18, 22267490), (20, 20040741), (21, 19086420), (28, 14314815), (30, 13360494), (35, 11451852), (36, 11133745), (42, 9543210), (45, 8906996), (60, 6680247), (63, 6362140), (70, 5725926), (84, 4771605), (90, 4453498), (105, 3817284), (126, 3181070), (140, 2862963), (180, 2226749), (210, 1908642), (252, 1590535), (315, 1272428), (420, 954321), (630, 636214), (1260, 318107)]