12987940

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{29}}^1\times {\mathrm{457}}^1$

素因数の和:509

約数の個数: 72

約数和(自身を含む): 32893560

約数和(自身を除く): 19905620

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 29, 35, 49, 58, 70, 98, 116, 140, 145, 196, 203, 245, 290, 406, 457, 490, 580, 812, 914, 980, 1015, 1421, 1828, 2030, 2285, 2842, 3199, 4060, 4570, 5684, 6398, 7105, 9140, 12796, 13253, 14210, 15995, 22393, 26506, 28420, 31990, 44786, 53012, 63980, 66265, 89572, 92771, 111965, 132530, 185542, 223930, 265060, 371084, 447860, 463855, 649397, 927710, 1298794, 1855420, 2597588, 3246985, 6493970, 12987940]

約数ペア:

[(1, 12987940), (2, 6493970), (4, 3246985), (5, 2597588), (7, 1855420), (10, 1298794), (14, 927710), (20, 649397), (28, 463855), (29, 447860), (35, 371084), (49, 265060), (58, 223930), (70, 185542), (98, 132530), (116, 111965), (140, 92771), (145, 89572), (196, 66265), (203, 63980), (245, 53012), (290, 44786), (406, 31990), (457, 28420), (490, 26506), (580, 22393), (812, 15995), (914, 14210), (980, 13253), (1015, 12796), (1421, 9140), (1828, 7105), (2030, 6398), (2285, 5684), (2842, 4570), (3199, 4060)]