640929537

素因数分解:

$3^3\times {\mathrm{97}}^1\times {\mathrm{101}}^1\times {\mathrm{2423}}^1$

素因数の和:2630

約数の個数: 32

約数和(自身を含む): 969212160

約数和(自身を除く): 328282623

約数列:

[1, 3, 9, 27, 97, 101, 291, 303, 873, 909, 2423, 2619, 2727, 7269, 9797, 21807, 29391, 65421, 88173, 235031, 244723, 264519, 705093, 734169, 2115279, 2202507, 6345837, 6607521, 23738131, 71214393, 213643179, 640929537]

約数ペア:

[(1, 640929537), (3, 213643179), (9, 71214393), (27, 23738131), (97, 6607521), (101, 6345837), (291, 2202507), (303, 2115279), (873, 734169), (909, 705093), (2423, 264519), (2619, 244723), (2727, 235031), (7269, 88173), (9797, 65421), (21807, 29391)]