21241948

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^2\times {\mathrm{67}}^2$

素因数の和:171

約数の個数: 54

約数和(自身を含む): 46700136

約数和(自身を除く): 25458188

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 52, 67, 91, 134, 169, 182, 268, 338, 364, 469, 676, 871, 938, 1183, 1742, 1876, 2366, 3484, 4489, 4732, 6097, 8978, 11323, 12194, 17956, 22646, 24388, 31423, 45292, 58357, 62846, 79261, 116714, 125692, 158522, 233428, 317044, 408499, 758641, 816998, 1517282, 1633996, 3034564, 5310487, 10620974, 21241948]

約数ペア:

[(1, 21241948), (2, 10620974), (4, 5310487), (7, 3034564), (13, 1633996), (14, 1517282), (26, 816998), (28, 758641), (52, 408499), (67, 317044), (91, 233428), (134, 158522), (169, 125692), (182, 116714), (268, 79261), (338, 62846), (364, 58357), (469, 45292), (676, 31423), (871, 24388), (938, 22646), (1183, 17956), (1742, 12194), (1876, 11323), (2366, 8978), (3484, 6097), (4489, 4732)]