81189220

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{307}}^1\times {\mathrm{1889}}^1$

素因数の和:2212

約数の個数: 48

約数和(自身を含む): 195592320

約数和(自身を除く): 114403100

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 307, 614, 1228, 1535, 1889, 2149, 3070, 3778, 4298, 6140, 7556, 8596, 9445, 10745, 13223, 18890, 21490, 26446, 37780, 42980, 52892, 66115, 132230, 264460, 579923, 1159846, 2319692, 2899615, 4059461, 5799230, 8118922, 11598460, 16237844, 20297305, 40594610, 81189220]

約数ペア:

[(1, 81189220), (2, 40594610), (4, 20297305), (5, 16237844), (7, 11598460), (10, 8118922), (14, 5799230), (20, 4059461), (28, 2899615), (35, 2319692), (70, 1159846), (140, 579923), (307, 264460), (614, 132230), (1228, 66115), (1535, 52892), (1889, 42980), (2149, 37780), (3070, 26446), (3778, 21490), (4298, 18890), (6140, 13223), (7556, 10745), (8596, 9445)]