139521740

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{103}}^1\times {\mathrm{761}}^1$

素因数の和:962

約数の個数: 48

約数和(自身を含む): 299557440

約数和(自身を除く): 160035700

約数列:

[1, 2, 4, 5, 10, 20, 89, 103, 178, 206, 356, 412, 445, 515, 761, 890, 1030, 1522, 1780, 2060, 3044, 3805, 7610, 9167, 15220, 18334, 36668, 45835, 67729, 78383, 91670, 135458, 156766, 183340, 270916, 313532, 338645, 391915, 677290, 783830, 1354580, 1567660, 6976087, 13952174, 27904348, 34880435, 69760870, 139521740]

約数ペア:

[(1, 139521740), (2, 69760870), (4, 34880435), (5, 27904348), (10, 13952174), (20, 6976087), (89, 1567660), (103, 1354580), (178, 783830), (206, 677290), (356, 391915), (412, 338645), (445, 313532), (515, 270916), (761, 183340), (890, 156766), (1030, 135458), (1522, 91670), (1780, 78383), (2060, 67729), (3044, 45835), (3805, 36668), (7610, 18334), (9167, 15220)]