399929880

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{476107}}^1$

素因数の和:476128

約数の個数: 64

約数和(自身を含む): 1371191040

約数和(自身を除く): 971261160

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 210, 280, 420, 840, 476107, 952214, 1428321, 1904428, 2380535, 2856642, 3332749, 3808856, 4761070, 5713284, 6665498, 7141605, 9522140, 9998247, 11426568, 13330996, 14283210, 16663745, 19044280, 19996494, 26661992, 28566420, 33327490, 39992988, 49991235, 57132840, 66654980, 79985976, 99982470, 133309960, 199964940, 399929880]

約数ペア:

[(1, 399929880), (2, 199964940), (3, 133309960), (4, 99982470), (5, 79985976), (6, 66654980), (7, 57132840), (8, 49991235), (10, 39992988), (12, 33327490), (14, 28566420), (15, 26661992), (20, 19996494), (21, 19044280), (24, 16663745), (28, 14283210), (30, 13330996), (35, 11426568), (40, 9998247), (42, 9522140), (56, 7141605), (60, 6665498), (70, 5713284), (84, 4761070), (105, 3808856), (120, 3332749), (140, 2856642), (168, 2380535), (210, 1904428), (280, 1428321), (420, 952214), (840, 476107)]