20215658

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{131}}^2$

素因数の和:314

約数の個数: 24

約数和(自身を含む): 33202560

約数和(自身を除く): 12986902

約数列:

[1, 2, 19, 31, 38, 62, 131, 262, 589, 1178, 2489, 4061, 4978, 8122, 17161, 34322, 77159, 154318, 326059, 531991, 652118, 1063982, 10107829, 20215658]

約数ペア:

[(1, 20215658), (2, 10107829), (19, 1063982), (31, 652118), (38, 531991), (62, 326059), (131, 154318), (262, 77159), (589, 34322), (1178, 17161), (2489, 8122), (4061, 4978)]