21096608

素因数分解:

$2^5\times {\mathrm{13}}^2\times {\mathrm{47}}^1\times {\mathrm{83}}^1$

素因数の和:166

約数の個数: 72

約数和(自身を含む): 46484928

約数和(自身を除く): 25388320

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 47, 52, 83, 94, 104, 166, 169, 188, 208, 332, 338, 376, 416, 611, 664, 676, 752, 1079, 1222, 1328, 1352, 1504, 2158, 2444, 2656, 2704, 3901, 4316, 4888, 5408, 7802, 7943, 8632, 9776, 14027, 15604, 15886, 17264, 19552, 28054, 31208, 31772, 34528, 50713, 56108, 62416, 63544, 101426, 112216, 124832, 127088, 202852, 224432, 254176, 405704, 448864, 659269, 811408, 1318538, 1622816, 2637076, 5274152, 10548304, 21096608]

約数ペア:

[(1, 21096608), (2, 10548304), (4, 5274152), (8, 2637076), (13, 1622816), (16, 1318538), (26, 811408), (32, 659269), (47, 448864), (52, 405704), (83, 254176), (94, 224432), (104, 202852), (166, 127088), (169, 124832), (188, 112216), (208, 101426), (332, 63544), (338, 62416), (376, 56108), (416, 50713), (611, 34528), (664, 31772), (676, 31208), (752, 28054), (1079, 19552), (1222, 17264), (1328, 15886), (1352, 15604), (1504, 14027), (2158, 9776), (2444, 8632), (2656, 7943), (2704, 7802), (3901, 5408), (4316, 4888)]