21509692

素因数分解:

$2^2\times {\mathrm{17}}^2\times {\mathrm{23}}^1\times {\mathrm{809}}^1$

素因数の和:870

約数の個数: 36

約数和(自身を含む): 41776560

約数和(自身を除く): 20266868

約数列:

[1, 2, 4, 17, 23, 34, 46, 68, 92, 289, 391, 578, 782, 809, 1156, 1564, 1618, 3236, 6647, 13294, 13753, 18607, 26588, 27506, 37214, 55012, 74428, 233801, 316319, 467602, 632638, 935204, 1265276, 5377423, 10754846, 21509692]

約数ペア:

[(1, 21509692), (2, 10754846), (4, 5377423), (17, 1265276), (23, 935204), (34, 632638), (46, 467602), (68, 316319), (92, 233801), (289, 74428), (391, 55012), (578, 37214), (782, 27506), (809, 26588), (1156, 18607), (1564, 13753), (1618, 13294), (3236, 6647)]