865163980

素因数分解:

$2^2\times 5^1\times {\mathrm{101}}^1\times {\mathrm{428299}}^1$

素因数の和:428409

約数の個数: 24

約数和(自身を含む): 1834837200

約数和(自身を除く): 969673220

約数列:

[1, 2, 4, 5, 10, 20, 101, 202, 404, 505, 1010, 2020, 428299, 856598, 1713196, 2141495, 4282990, 8565980, 43258199, 86516398, 173032796, 216290995, 432581990, 865163980]

約数ペア:

[(1, 865163980), (2, 432581990), (4, 216290995), (5, 173032796), (10, 86516398), (20, 43258199), (101, 8565980), (202, 4282990), (404, 2141495), (505, 1713196), (1010, 856598), (2020, 428299)]