21445024

素因数分解:

$2^5\times {\mathrm{17}}^1\times {\mathrm{79}}^1\times {\mathrm{499}}^1$

素因数の和:605

約数の個数: 48

約数和(自身を含む): 45360000

約数和(自身を除く): 23914976

約数列:

[1, 2, 4, 8, 16, 17, 32, 34, 68, 79, 136, 158, 272, 316, 499, 544, 632, 998, 1264, 1343, 1996, 2528, 2686, 3992, 5372, 7984, 8483, 10744, 15968, 16966, 21488, 33932, 39421, 42976, 67864, 78842, 135728, 157684, 271456, 315368, 630736, 670157, 1261472, 1340314, 2680628, 5361256, 10722512, 21445024]

約数ペア:

[(1, 21445024), (2, 10722512), (4, 5361256), (8, 2680628), (16, 1340314), (17, 1261472), (32, 670157), (34, 630736), (68, 315368), (79, 271456), (136, 157684), (158, 135728), (272, 78842), (316, 67864), (499, 42976), (544, 39421), (632, 33932), (998, 21488), (1264, 16966), (1343, 15968), (1996, 10744), (2528, 8483), (2686, 7984), (3992, 5372)]