20487890

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{6343}}^1$

素因数の和:6386

約数の個数: 32

約数和(自身を含む): 41109120

約数和(自身を除く): 20621230

約数列:

[1, 2, 5, 10, 17, 19, 34, 38, 85, 95, 170, 190, 323, 646, 1615, 3230, 6343, 12686, 31715, 63430, 107831, 120517, 215662, 241034, 539155, 602585, 1078310, 1205170, 2048789, 4097578, 10243945, 20487890]

約数ペア:

[(1, 20487890), (2, 10243945), (5, 4097578), (10, 2048789), (17, 1205170), (19, 1078310), (34, 602585), (38, 539155), (85, 241034), (95, 215662), (170, 120517), (190, 107831), (323, 63430), (646, 31715), (1615, 12686), (3230, 6343)]