51149840

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{241}}^1\times {\mathrm{379}}^1$

素因数の和:640

約数の個数: 80

約数和(自身を含む): 136836480

約数和(自身を除く): 85686640

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 241, 280, 379, 482, 560, 758, 964, 1205, 1516, 1687, 1895, 1928, 2410, 2653, 3032, 3374, 3790, 3856, 4820, 5306, 6064, 6748, 7580, 8435, 9640, 10612, 13265, 13496, 15160, 16870, 19280, 21224, 26530, 26992, 30320, 33740, 42448, 53060, 67480, 91339, 106120, 134960, 182678, 212240, 365356, 456695, 639373, 730712, 913390, 1278746, 1461424, 1826780, 2557492, 3196865, 3653560, 5114984, 6393730, 7307120, 10229968, 12787460, 25574920, 51149840]

約数ペア:

[(1, 51149840), (2, 25574920), (4, 12787460), (5, 10229968), (7, 7307120), (8, 6393730), (10, 5114984), (14, 3653560), (16, 3196865), (20, 2557492), (28, 1826780), (35, 1461424), (40, 1278746), (56, 913390), (70, 730712), (80, 639373), (112, 456695), (140, 365356), (241, 212240), (280, 182678), (379, 134960), (482, 106120), (560, 91339), (758, 67480), (964, 53060), (1205, 42448), (1516, 33740), (1687, 30320), (1895, 26992), (1928, 26530), (2410, 21224), (2653, 19280), (3032, 16870), (3374, 15160), (3790, 13496), (3856, 13265), (4820, 10612), (5306, 9640), (6064, 8435), (6748, 7580)]