18949210

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{421}}^1\times {\mathrm{643}}^1$

素因数の和:1078

約数の個数: 32

約数和(自身を含む): 39134592

約数和(自身を除く): 20185382

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 421, 643, 842, 1286, 2105, 2947, 3215, 4210, 4501, 5894, 6430, 9002, 14735, 22505, 29470, 45010, 270703, 541406, 1353515, 1894921, 2707030, 3789842, 9474605, 18949210]

約数ペア:

[(1, 18949210), (2, 9474605), (5, 3789842), (7, 2707030), (10, 1894921), (14, 1353515), (35, 541406), (70, 270703), (421, 45010), (643, 29470), (842, 22505), (1286, 14735), (2105, 9002), (2947, 6430), (3215, 5894), (4210, 4501)]