212161865905

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{181}}^1\times {\mathrm{1121689}}^1$

素因数の和:1121905

約数の個数: 32

約数和(自身を含む): 293972515200

約数和(自身を除く): 81810649295

約数列:

[1, 5, 11, 19, 55, 95, 181, 209, 905, 1045, 1991, 3439, 9955, 17195, 37829, 189145, 1121689, 5608445, 12338579, 21312091, 61692895, 106560455, 203025709, 234433001, 1015128545, 1172165005, 2233282799, 3857488471, 11166413995, 19287442355, 42432373181, 212161865905]

約数ペア:

[(1, 212161865905), (5, 42432373181), (11, 19287442355), (19, 11166413995), (55, 3857488471), (95, 2233282799), (181, 1172165005), (209, 1015128545), (905, 234433001), (1045, 203025709), (1991, 106560455), (3439, 61692895), (9955, 21312091), (17195, 12338579), (37829, 5608445), (189145, 1121689)]