18787720

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{3947}}^1$

素因数の和:3982

約数の個数: 64

約数和(自身を含む): 51166080

約数和(自身を除く): 32378360

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 17, 20, 28, 34, 35, 40, 56, 68, 70, 85, 119, 136, 140, 170, 238, 280, 340, 476, 595, 680, 952, 1190, 2380, 3947, 4760, 7894, 15788, 19735, 27629, 31576, 39470, 55258, 67099, 78940, 110516, 134198, 138145, 157880, 221032, 268396, 276290, 335495, 469693, 536792, 552580, 670990, 939386, 1105160, 1341980, 1878772, 2348465, 2683960, 3757544, 4696930, 9393860, 18787720]

約数ペア:

[(1, 18787720), (2, 9393860), (4, 4696930), (5, 3757544), (7, 2683960), (8, 2348465), (10, 1878772), (14, 1341980), (17, 1105160), (20, 939386), (28, 670990), (34, 552580), (35, 536792), (40, 469693), (56, 335495), (68, 276290), (70, 268396), (85, 221032), (119, 157880), (136, 138145), (140, 134198), (170, 110516), (238, 78940), (280, 67099), (340, 55258), (476, 39470), (595, 31576), (680, 27629), (952, 19735), (1190, 15788), (2380, 7894), (3947, 4760)]