81843160

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{239}}^1\times {\mathrm{1223}}^1$

素因数の和:1480

約数の個数: 64

約数和(自身を含む): 211507200

約数和(自身を除く): 129664040

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 239, 280, 478, 956, 1195, 1223, 1673, 1912, 2390, 2446, 3346, 4780, 4892, 6115, 6692, 8365, 8561, 9560, 9784, 12230, 13384, 16730, 17122, 24460, 33460, 34244, 42805, 48920, 66920, 68488, 85610, 171220, 292297, 342440, 584594, 1169188, 1461485, 2046079, 2338376, 2922970, 4092158, 5845940, 8184316, 10230395, 11691880, 16368632, 20460790, 40921580, 81843160]

約数ペア:

[(1, 81843160), (2, 40921580), (4, 20460790), (5, 16368632), (7, 11691880), (8, 10230395), (10, 8184316), (14, 5845940), (20, 4092158), (28, 2922970), (35, 2338376), (40, 2046079), (56, 1461485), (70, 1169188), (140, 584594), (239, 342440), (280, 292297), (478, 171220), (956, 85610), (1195, 68488), (1223, 66920), (1673, 48920), (1912, 42805), (2390, 34244), (2446, 33460), (3346, 24460), (4780, 17122), (4892, 16730), (6115, 13384), (6692, 12230), (8365, 9784), (8561, 9560)]