7978100

素因数分解:

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

素因数の和:82

約数の個数: 108

約数和(自身を含む): 20834604

約数和(自身を除く): 12856504

約数列:

[1, 2, 4, 5, 10, 13, 17, 19, 20, 25, 26, 34, 38, 50, 52, 65, 68, 76, 85, 95, 100, 130, 170, 190, 221, 247, 260, 323, 325, 340, 361, 380, 425, 442, 475, 494, 646, 650, 722, 850, 884, 950, 988, 1105, 1235, 1292, 1300, 1444, 1615, 1700, 1805, 1900, 2210, 2470, 3230, 3610, 4199, 4420, 4693, 4940, 5525, 6137, 6175, 6460, 7220, 8075, 8398, 9025, 9386, 11050, 12274, 12350, 16150, 16796, 18050, 18772, 20995, 22100, 23465, 24548, 24700, 30685, 32300, 36100, 41990, 46930, 61370, 79781, 83980, 93860, 104975, 117325, 122740, 153425, 159562, 209950, 234650, 306850, 319124, 398905, 419900, 469300, 613700, 797810, 1595620, 1994525, 3989050, 7978100]

約数ペア:

[(1, 7978100), (2, 3989050), (4, 1994525), (5, 1595620), (10, 797810), (13, 613700), (17, 469300), (19, 419900), (20, 398905), (25, 319124), (26, 306850), (34, 234650), (38, 209950), (50, 159562), (52, 153425), (65, 122740), (68, 117325), (76, 104975), (85, 93860), (95, 83980), (100, 79781), (130, 61370), (170, 46930), (190, 41990), (221, 36100), (247, 32300), (260, 30685), (323, 24700), (325, 24548), (340, 23465), (361, 22100), (380, 20995), (425, 18772), (442, 18050), (475, 16796), (494, 16150), (646, 12350), (650, 12274), (722, 11050), (850, 9386), (884, 9025), (950, 8398), (988, 8075), (1105, 7220), (1235, 6460), (1292, 6175), (1300, 6137), (1444, 5525), (1615, 4940), (1700, 4693), (1805, 4420), (1900, 4199), (2210, 3610), (2470, 3230)]