778840780

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{23029}}^1$

素因数の和:23146

約数の個数: 48

約数和(自身を含む): 1741068000

約数和(自身を除く): 962227220

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 89, 95, 178, 190, 356, 380, 445, 890, 1691, 1780, 3382, 6764, 8455, 16910, 23029, 33820, 46058, 92116, 115145, 230290, 437551, 460580, 875102, 1750204, 2049581, 2187755, 4099162, 4375510, 8198324, 8751020, 10247905, 20495810, 38942039, 40991620, 77884078, 155768156, 194710195, 389420390, 778840780]

約数ペア:

[(1, 778840780), (2, 389420390), (4, 194710195), (5, 155768156), (10, 77884078), (19, 40991620), (20, 38942039), (38, 20495810), (76, 10247905), (89, 8751020), (95, 8198324), (178, 4375510), (190, 4099162), (356, 2187755), (380, 2049581), (445, 1750204), (890, 875102), (1691, 460580), (1780, 437551), (3382, 230290), (6764, 115145), (8455, 92116), (16910, 46058), (23029, 33820)]