20813910

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{83}}^1\times {\mathrm{643}}^1$

素因数の和:749

約数の個数: 64

約数和(自身を含む): 54528768

約数和(自身を除く): 33714858

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 83, 130, 166, 195, 249, 390, 415, 498, 643, 830, 1079, 1245, 1286, 1929, 2158, 2490, 3215, 3237, 3858, 5395, 6430, 6474, 8359, 9645, 10790, 16185, 16718, 19290, 25077, 32370, 41795, 50154, 53369, 83590, 106738, 125385, 160107, 250770, 266845, 320214, 533690, 693797, 800535, 1387594, 1601070, 2081391, 3468985, 4162782, 6937970, 10406955, 20813910]

約数ペア:

[(1, 20813910), (2, 10406955), (3, 6937970), (5, 4162782), (6, 3468985), (10, 2081391), (13, 1601070), (15, 1387594), (26, 800535), (30, 693797), (39, 533690), (65, 320214), (78, 266845), (83, 250770), (130, 160107), (166, 125385), (195, 106738), (249, 83590), (390, 53369), (415, 50154), (498, 41795), (643, 32370), (830, 25077), (1079, 19290), (1245, 16718), (1286, 16185), (1929, 10790), (2158, 9645), (2490, 8359), (3215, 6474), (3237, 6430), (3858, 5395)]