21175784

素因数分解:

$2^3\times 7^1\times {\mathrm{61}}^1\times {\mathrm{6199}}^1$

素因数の和:6273

約数の個数: 32

約数和(自身を含む): 46128000

約数和(自身を除く): 24952216

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 61, 122, 244, 427, 488, 854, 1708, 3416, 6199, 12398, 24796, 43393, 49592, 86786, 173572, 347144, 378139, 756278, 1512556, 2646973, 3025112, 5293946, 10587892, 21175784]

約数ペア:

[(1, 21175784), (2, 10587892), (4, 5293946), (7, 3025112), (8, 2646973), (14, 1512556), (28, 756278), (56, 378139), (61, 347144), (122, 173572), (244, 86786), (427, 49592), (488, 43393), (854, 24796), (1708, 12398), (3416, 6199)]