21345512

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{317}}^1\times {\mathrm{443}}^1$

素因数の和:785

約数の個数: 32

約数和(自身を含む): 42357600

約数和(自身を除く): 21012088

約数列:

[1, 2, 4, 8, 19, 38, 76, 152, 317, 443, 634, 886, 1268, 1772, 2536, 3544, 6023, 8417, 12046, 16834, 24092, 33668, 48184, 67336, 140431, 280862, 561724, 1123448, 2668189, 5336378, 10672756, 21345512]

約数ペア:

[(1, 21345512), (2, 10672756), (4, 5336378), (8, 2668189), (19, 1123448), (38, 561724), (76, 280862), (152, 140431), (317, 67336), (443, 48184), (634, 33668), (886, 24092), (1268, 16834), (1772, 12046), (2536, 8417), (3544, 6023)]