21156456

素因数分解:

$2^3\times 3^1\times {\mathrm{59}}^1\times {\mathrm{67}}^1\times {\mathrm{223}}^1$

素因数の和:358

約数の個数: 64

約数和(自身を含む): 54835200

約数和(自身を除く): 33678744

約数列:

[1, 2, 3, 4, 6, 8, 12, 24, 59, 67, 118, 134, 177, 201, 223, 236, 268, 354, 402, 446, 472, 536, 669, 708, 804, 892, 1338, 1416, 1608, 1784, 2676, 3953, 5352, 7906, 11859, 13157, 14941, 15812, 23718, 26314, 29882, 31624, 39471, 44823, 47436, 52628, 59764, 78942, 89646, 94872, 105256, 119528, 157884, 179292, 315768, 358584, 881519, 1763038, 2644557, 3526076, 5289114, 7052152, 10578228, 21156456]

約数ペア:

[(1, 21156456), (2, 10578228), (3, 7052152), (4, 5289114), (6, 3526076), (8, 2644557), (12, 1763038), (24, 881519), (59, 358584), (67, 315768), (118, 179292), (134, 157884), (177, 119528), (201, 105256), (223, 94872), (236, 89646), (268, 78942), (354, 59764), (402, 52628), (446, 47436), (472, 44823), (536, 39471), (669, 31624), (708, 29882), (804, 26314), (892, 23718), (1338, 15812), (1416, 14941), (1608, 13157), (1784, 11859), (2676, 7906), (3953, 5352)]