21061290

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{17123}}^1$

素因数の和:17174

約数の個数: 32

約数和(自身を含む): 51782976

約数和(自身を除く): 30721686

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 41, 82, 123, 205, 246, 410, 615, 1230, 17123, 34246, 51369, 85615, 102738, 171230, 256845, 513690, 702043, 1404086, 2106129, 3510215, 4212258, 7020430, 10530645, 21061290]

約数ペア:

[(1, 21061290), (2, 10530645), (3, 7020430), (5, 4212258), (6, 3510215), (10, 2106129), (15, 1404086), (30, 702043), (41, 513690), (82, 256845), (123, 171230), (205, 102738), (246, 85615), (410, 51369), (615, 34246), (1230, 17123)]