921680

素因数分解:

$2^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{281}}^1$

素因数の和:335

約数の個数: 40

約数和(自身を含む): 2202984

約数和(自身を除く): 1281304

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 41, 80, 82, 164, 205, 281, 328, 410, 562, 656, 820, 1124, 1405, 1640, 2248, 2810, 3280, 4496, 5620, 11240, 11521, 22480, 23042, 46084, 57605, 92168, 115210, 184336, 230420, 460840, 921680]

約数ペア:

[(1, 921680), (2, 460840), (4, 230420), (5, 184336), (8, 115210), (10, 92168), (16, 57605), (20, 46084), (40, 23042), (41, 22480), (80, 11521), (82, 11240), (164, 5620), (205, 4496), (281, 3280), (328, 2810), (410, 2248), (562, 1640), (656, 1405), (820, 1124)]