21148952

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{211}}^1$

素因数の和:312

約数の個数: 64

約数和(自身を含む): 46707840

約数和(自身を除く): 25558888

約数列:

[1, 2, 4, 8, 11, 17, 22, 34, 44, 67, 68, 88, 134, 136, 187, 211, 268, 374, 422, 536, 737, 748, 844, 1139, 1474, 1496, 1688, 2278, 2321, 2948, 3587, 4556, 4642, 5896, 7174, 9112, 9284, 12529, 14137, 14348, 18568, 25058, 28274, 28696, 39457, 50116, 56548, 78914, 100232, 113096, 155507, 157828, 240329, 311014, 315656, 480658, 622028, 961316, 1244056, 1922632, 2643619, 5287238, 10574476, 21148952]

約数ペア:

[(1, 21148952), (2, 10574476), (4, 5287238), (8, 2643619), (11, 1922632), (17, 1244056), (22, 961316), (34, 622028), (44, 480658), (67, 315656), (68, 311014), (88, 240329), (134, 157828), (136, 155507), (187, 113096), (211, 100232), (268, 78914), (374, 56548), (422, 50116), (536, 39457), (737, 28696), (748, 28274), (844, 25058), (1139, 18568), (1474, 14348), (1496, 14137), (1688, 12529), (2278, 9284), (2321, 9112), (2948, 7174), (3587, 5896), (4556, 4642)]