440655740

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{73}}^1\times {\mathrm{43117}}^1$

素因数の和:43206

約数の個数: 48

約数和(自身を含む): 1072085952

約数和(自身を除く): 631430212

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 73, 140, 146, 292, 365, 511, 730, 1022, 1460, 2044, 2555, 5110, 10220, 43117, 86234, 172468, 215585, 301819, 431170, 603638, 862340, 1207276, 1509095, 3018190, 3147541, 6036380, 6295082, 12590164, 15737705, 22032787, 31475410, 44065574, 62950820, 88131148, 110163935, 220327870, 440655740]

約数ペア:

[(1, 440655740), (2, 220327870), (4, 110163935), (5, 88131148), (7, 62950820), (10, 44065574), (14, 31475410), (20, 22032787), (28, 15737705), (35, 12590164), (70, 6295082), (73, 6036380), (140, 3147541), (146, 3018190), (292, 1509095), (365, 1207276), (511, 862340), (730, 603638), (1022, 431170), (1460, 301819), (2044, 215585), (2555, 172468), (5110, 86234), (10220, 43117)]