21000663502

素因数分解:

$2^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{499}}^1\times {\mathrm{4363}}^1$

素因数の和:4937

約数の個数: 64

約数和(自身を含む): 39590208000

約数和(自身を除く): 18589544498

約数列:

[1, 2, 7, 13, 14, 26, 53, 91, 106, 182, 371, 499, 689, 742, 998, 1378, 3493, 4363, 4823, 6487, 6986, 8726, 9646, 12974, 26447, 30541, 45409, 52894, 56719, 61082, 90818, 113438, 185129, 231239, 343811, 370258, 397033, 462478, 687622, 794066, 1618673, 2177137, 2406677, 3006107, 3237346, 4354274, 4813354, 6012214, 15239959, 21042749, 28302781, 30479918, 42085498, 56605562, 115388261, 198119467, 230776522, 396238934, 807717827, 1500047393, 1615435654, 3000094786, 10500331751, 21000663502]

約数ペア:

[(1, 21000663502), (2, 10500331751), (7, 3000094786), (13, 1615435654), (14, 1500047393), (26, 807717827), (53, 396238934), (91, 230776522), (106, 198119467), (182, 115388261), (371, 56605562), (499, 42085498), (689, 30479918), (742, 28302781), (998, 21042749), (1378, 15239959), (3493, 6012214), (4363, 4813354), (4823, 4354274), (6487, 3237346), (6986, 3006107), (8726, 2406677), (9646, 2177137), (12974, 1618673), (26447, 794066), (30541, 687622), (45409, 462478), (52894, 397033), (56719, 370258), (61082, 343811), (90818, 231239), (113438, 185129)]