20694440

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{2341}}^1$

素因数の和:2382

約数の個数: 64

約数和(自身を含む): 53116560

約数和(自身を除く): 32422120

約数列:

[1, 2, 4, 5, 8, 10, 13, 17, 20, 26, 34, 40, 52, 65, 68, 85, 104, 130, 136, 170, 221, 260, 340, 442, 520, 680, 884, 1105, 1768, 2210, 2341, 4420, 4682, 8840, 9364, 11705, 18728, 23410, 30433, 39797, 46820, 60866, 79594, 93640, 121732, 152165, 159188, 198985, 243464, 304330, 318376, 397970, 517361, 608660, 795940, 1034722, 1217320, 1591880, 2069444, 2586805, 4138888, 5173610, 10347220, 20694440]

約数ペア:

[(1, 20694440), (2, 10347220), (4, 5173610), (5, 4138888), (8, 2586805), (10, 2069444), (13, 1591880), (17, 1217320), (20, 1034722), (26, 795940), (34, 608660), (40, 517361), (52, 397970), (65, 318376), (68, 304330), (85, 243464), (104, 198985), (130, 159188), (136, 152165), (170, 121732), (221, 93640), (260, 79594), (340, 60866), (442, 46820), (520, 39797), (680, 30433), (884, 23410), (1105, 18728), (1768, 11705), (2210, 9364), (2341, 8840), (4420, 4682)]