990416

素因数分解:

$2^4\times 7^1\times {\mathrm{37}}^1\times {\mathrm{239}}^1$

素因数の和:291

約数の個数: 40

約数和(自身を含む): 2261760

約数和(自身を除く): 1271344

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 37, 56, 74, 112, 148, 239, 259, 296, 478, 518, 592, 956, 1036, 1673, 1912, 2072, 3346, 3824, 4144, 6692, 8843, 13384, 17686, 26768, 35372, 61901, 70744, 123802, 141488, 247604, 495208, 990416]

約数ペア:

[(1, 990416), (2, 495208), (4, 247604), (7, 141488), (8, 123802), (14, 70744), (16, 61901), (28, 35372), (37, 26768), (56, 17686), (74, 13384), (112, 8843), (148, 6692), (239, 4144), (259, 3824), (296, 3346), (478, 2072), (518, 1912), (592, 1673), (956, 1036)]