55638640

素因数分解:

$2^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{16963}}^1$

素因数の和:17017

約数の個数: 40

約数和(自身を含む): 132522768

約数和(自身を除く): 76884128

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 41, 80, 82, 164, 205, 328, 410, 656, 820, 1640, 3280, 16963, 33926, 67852, 84815, 135704, 169630, 271408, 339260, 678520, 695483, 1357040, 1390966, 2781932, 3477415, 5563864, 6954830, 11127728, 13909660, 27819320, 55638640]

約数ペア:

[(1, 55638640), (2, 27819320), (4, 13909660), (5, 11127728), (8, 6954830), (10, 5563864), (16, 3477415), (20, 2781932), (40, 1390966), (41, 1357040), (80, 695483), (82, 678520), (164, 339260), (205, 271408), (328, 169630), (410, 135704), (656, 84815), (820, 67852), (1640, 33926), (3280, 16963)]