3989050

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^2$

素因数の和:80

約数の個数: 72

約数和(自身を含む): 8929116

約数和(自身を除く): 4940066

約数列:

[1, 2, 5, 10, 13, 17, 19, 25, 26, 34, 38, 50, 65, 85, 95, 130, 170, 190, 221, 247, 323, 325, 361, 425, 442, 475, 494, 646, 650, 722, 850, 950, 1105, 1235, 1615, 1805, 2210, 2470, 3230, 3610, 4199, 4693, 5525, 6137, 6175, 8075, 8398, 9025, 9386, 11050, 12274, 12350, 16150, 18050, 20995, 23465, 30685, 41990, 46930, 61370, 79781, 104975, 117325, 153425, 159562, 209950, 234650, 306850, 398905, 797810, 1994525, 3989050]

約数ペア:

[(1, 3989050), (2, 1994525), (5, 797810), (10, 398905), (13, 306850), (17, 234650), (19, 209950), (25, 159562), (26, 153425), (34, 117325), (38, 104975), (50, 79781), (65, 61370), (85, 46930), (95, 41990), (130, 30685), (170, 23465), (190, 20995), (221, 18050), (247, 16150), (323, 12350), (325, 12274), (361, 11050), (425, 9386), (442, 9025), (475, 8398), (494, 8075), (646, 6175), (650, 6137), (722, 5525), (850, 4693), (950, 4199), (1105, 3610), (1235, 3230), (1615, 2470), (1805, 2210)]