21986224

素因数分解:

$2^4\times {\mathrm{13}}^2\times {\mathrm{47}}^1\times {\mathrm{173}}^1$

素因数の和:254

約数の個数: 60

約数和(自身を含む): 47380896

約数和(自身を除く): 25394672

約数列:

[1, 2, 4, 8, 13, 16, 26, 47, 52, 94, 104, 169, 173, 188, 208, 338, 346, 376, 611, 676, 692, 752, 1222, 1352, 1384, 2249, 2444, 2704, 2768, 4498, 4888, 7943, 8131, 8996, 9776, 15886, 16262, 17992, 29237, 31772, 32524, 35984, 58474, 63544, 65048, 105703, 116948, 127088, 130096, 211406, 233896, 422812, 467792, 845624, 1374139, 1691248, 2748278, 5496556, 10993112, 21986224]

約数ペア:

[(1, 21986224), (2, 10993112), (4, 5496556), (8, 2748278), (13, 1691248), (16, 1374139), (26, 845624), (47, 467792), (52, 422812), (94, 233896), (104, 211406), (169, 130096), (173, 127088), (188, 116948), (208, 105703), (338, 65048), (346, 63544), (376, 58474), (611, 35984), (676, 32524), (692, 31772), (752, 29237), (1222, 17992), (1352, 16262), (1384, 15886), (2249, 9776), (2444, 8996), (2704, 8131), (2768, 7943), (4498, 4888)]