19998968

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{7331}}^1$

素因数の和:7379

約数の個数: 32

約数和(自身を含む): 42232320

約数和(自身を除く): 22233352

約数列:

[1, 2, 4, 8, 11, 22, 31, 44, 62, 88, 124, 248, 341, 682, 1364, 2728, 7331, 14662, 29324, 58648, 80641, 161282, 227261, 322564, 454522, 645128, 909044, 1818088, 2499871, 4999742, 9999484, 19998968]

約数ペア:

[(1, 19998968), (2, 9999484), (4, 4999742), (8, 2499871), (11, 1818088), (22, 909044), (31, 645128), (44, 454522), (62, 322564), (88, 227261), (124, 161282), (248, 80641), (341, 58648), (682, 29324), (1364, 14662), (2728, 7331)]