1218308020

素因数分解:

$2^2\times 5^1\times {\mathrm{241}}^1\times {\mathrm{252761}}^1$

素因数の和:253011

約数の個数: 24

約数和(自身を含む): 2569072968

約数和(自身を除く): 1350764948

約数列:

[1, 2, 4, 5, 10, 20, 241, 482, 964, 1205, 2410, 4820, 252761, 505522, 1011044, 1263805, 2527610, 5055220, 60915401, 121830802, 243661604, 304577005, 609154010, 1218308020]

約数ペア:

[(1, 1218308020), (2, 609154010), (4, 304577005), (5, 243661604), (10, 121830802), (20, 60915401), (241, 5055220), (482, 2527610), (964, 1263805), (1205, 1011044), (2410, 505522), (4820, 252761)]