21339432

素因数分解:

$2^3\times 3^2\times {\mathrm{19}}^2\times {\mathrm{821}}^1$

素因数の和:871

約数の個数: 72

約数和(自身を含む): 61070490

約数和(自身を除く): 39731058

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 19, 24, 36, 38, 57, 72, 76, 114, 152, 171, 228, 342, 361, 456, 684, 722, 821, 1083, 1368, 1444, 1642, 2166, 2463, 2888, 3249, 3284, 4332, 4926, 6498, 6568, 7389, 8664, 9852, 12996, 14778, 15599, 19704, 25992, 29556, 31198, 46797, 59112, 62396, 93594, 124792, 140391, 187188, 280782, 296381, 374376, 561564, 592762, 889143, 1123128, 1185524, 1778286, 2371048, 2667429, 3556572, 5334858, 7113144, 10669716, 21339432]

約数ペア:

[(1, 21339432), (2, 10669716), (3, 7113144), (4, 5334858), (6, 3556572), (8, 2667429), (9, 2371048), (12, 1778286), (18, 1185524), (19, 1123128), (24, 889143), (36, 592762), (38, 561564), (57, 374376), (72, 296381), (76, 280782), (114, 187188), (152, 140391), (171, 124792), (228, 93594), (342, 62396), (361, 59112), (456, 46797), (684, 31198), (722, 29556), (821, 25992), (1083, 19704), (1368, 15599), (1444, 14778), (1642, 12996), (2166, 9852), (2463, 8664), (2888, 7389), (3249, 6568), (3284, 6498), (4332, 4926)]