19982640

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{139}}^1\times {\mathrm{599}}^1$

素因数の和:754

約数の個数: 80

約数和(自身を含む): 62496000

約数和(自身を除く): 42513360

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 139, 240, 278, 417, 556, 599, 695, 834, 1112, 1198, 1390, 1668, 1797, 2085, 2224, 2396, 2780, 2995, 3336, 3594, 4170, 4792, 5560, 5990, 6672, 7188, 8340, 8985, 9584, 11120, 11980, 14376, 16680, 17970, 23960, 28752, 33360, 35940, 47920, 71880, 83261, 143760, 166522, 249783, 333044, 416305, 499566, 666088, 832610, 999132, 1248915, 1332176, 1665220, 1998264, 2497830, 3330440, 3996528, 4995660, 6660880, 9991320, 19982640]

約数ペア:

[(1, 19982640), (2, 9991320), (3, 6660880), (4, 4995660), (5, 3996528), (6, 3330440), (8, 2497830), (10, 1998264), (12, 1665220), (15, 1332176), (16, 1248915), (20, 999132), (24, 832610), (30, 666088), (40, 499566), (48, 416305), (60, 333044), (80, 249783), (120, 166522), (139, 143760), (240, 83261), (278, 71880), (417, 47920), (556, 35940), (599, 33360), (695, 28752), (834, 23960), (1112, 17970), (1198, 16680), (1390, 14376), (1668, 11980), (1797, 11120), (2085, 9584), (2224, 8985), (2396, 8340), (2780, 7188), (2995, 6672), (3336, 5990), (3594, 5560), (4170, 4792)]