21960770

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{523}}^1$

素因数の和:579

約数の個数: 64

約数和(自身を含む): 47537280

約数和(自身を除く): 25576510

約数列:

[1, 2, 5, 10, 13, 17, 19, 26, 34, 38, 65, 85, 95, 130, 170, 190, 221, 247, 323, 442, 494, 523, 646, 1046, 1105, 1235, 1615, 2210, 2470, 2615, 3230, 4199, 5230, 6799, 8398, 8891, 9937, 13598, 17782, 19874, 20995, 33995, 41990, 44455, 49685, 67990, 88910, 99370, 115583, 129181, 168929, 231166, 258362, 337858, 577915, 645905, 844645, 1155830, 1291810, 1689290, 2196077, 4392154, 10980385, 21960770]

約数ペア:

[(1, 21960770), (2, 10980385), (5, 4392154), (10, 2196077), (13, 1689290), (17, 1291810), (19, 1155830), (26, 844645), (34, 645905), (38, 577915), (65, 337858), (85, 258362), (95, 231166), (130, 168929), (170, 129181), (190, 115583), (221, 99370), (247, 88910), (323, 67990), (442, 49685), (494, 44455), (523, 41990), (646, 33995), (1046, 20995), (1105, 19874), (1235, 17782), (1615, 13598), (2210, 9937), (2470, 8891), (2615, 8398), (3230, 6799), (4199, 5230)]