1387640

素因数分解:

$2^3\times 5^1\times {\mathrm{113}}^1\times {\mathrm{307}}^1$

素因数の和:431

約数の個数: 32

約数和(自身を含む): 3160080

約数和(自身を除く): 1772440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 113, 226, 307, 452, 565, 614, 904, 1130, 1228, 1535, 2260, 2456, 3070, 4520, 6140, 12280, 34691, 69382, 138764, 173455, 277528, 346910, 693820, 1387640]

約数ペア:

[(1, 1387640), (2, 693820), (4, 346910), (5, 277528), (8, 173455), (10, 138764), (20, 69382), (40, 34691), (113, 12280), (226, 6140), (307, 4520), (452, 3070), (565, 2456), (614, 2260), (904, 1535), (1130, 1228)]