66719240

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{239}}^1\times {\mathrm{997}}^1$

素因数の和:1254

約数の個数: 64

約数和(自身を含む): 172454400

約数和(自身を除く): 105735160

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 239, 280, 478, 956, 997, 1195, 1673, 1912, 1994, 2390, 3346, 3988, 4780, 4985, 6692, 6979, 7976, 8365, 9560, 9970, 13384, 13958, 16730, 19940, 27916, 33460, 34895, 39880, 55832, 66920, 69790, 139580, 238283, 279160, 476566, 953132, 1191415, 1667981, 1906264, 2382830, 3335962, 4765660, 6671924, 8339905, 9531320, 13343848, 16679810, 33359620, 66719240]

約数ペア:

[(1, 66719240), (2, 33359620), (4, 16679810), (5, 13343848), (7, 9531320), (8, 8339905), (10, 6671924), (14, 4765660), (20, 3335962), (28, 2382830), (35, 1906264), (40, 1667981), (56, 1191415), (70, 953132), (140, 476566), (239, 279160), (280, 238283), (478, 139580), (956, 69790), (997, 66920), (1195, 55832), (1673, 39880), (1912, 34895), (1994, 33460), (2390, 27916), (3346, 19940), (3988, 16730), (4780, 13958), (4985, 13384), (6692, 9970), (6979, 9560), (7976, 8365)]