21221296

素因数分解:

$2^4\times {\mathrm{79}}^1\times {\mathrm{103}}^1\times {\mathrm{163}}^1$

素因数の和:353

約数の個数: 40

約数和(自身を含む): 42298880

約数和(自身を除く): 21077584

約数列:

[1, 2, 4, 8, 16, 79, 103, 158, 163, 206, 316, 326, 412, 632, 652, 824, 1264, 1304, 1648, 2608, 8137, 12877, 16274, 16789, 25754, 32548, 33578, 51508, 65096, 67156, 103016, 130192, 134312, 206032, 268624, 1326331, 2652662, 5305324, 10610648, 21221296]

約数ペア:

[(1, 21221296), (2, 10610648), (4, 5305324), (8, 2652662), (16, 1326331), (79, 268624), (103, 206032), (158, 134312), (163, 130192), (206, 103016), (316, 67156), (326, 65096), (412, 51508), (632, 33578), (652, 32548), (824, 25754), (1264, 16789), (1304, 16274), (1648, 12877), (2608, 8137)]