19995378

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{389}}^1\times {\mathrm{659}}^1$

素因数の和:1066

約数の個数: 32

約数和(自身を含む): 43243200

約数和(自身を除く): 23247822

約数列:

[1, 2, 3, 6, 13, 26, 39, 78, 389, 659, 778, 1167, 1318, 1977, 2334, 3954, 5057, 8567, 10114, 15171, 17134, 25701, 30342, 51402, 256351, 512702, 769053, 1538106, 3332563, 6665126, 9997689, 19995378]

約数ペア:

[(1, 19995378), (2, 9997689), (3, 6665126), (6, 3332563), (13, 1538106), (26, 769053), (39, 512702), (78, 256351), (389, 51402), (659, 30342), (778, 25701), (1167, 17134), (1318, 15171), (1977, 10114), (2334, 8567), (3954, 5057)]