291236240

素因数分解:

$2^4\times 5^1\times {\mathrm{181}}^1\times {\mathrm{20113}}^1$

素因数の和:20307

約数の個数: 40

約数和(自身を含む): 680899128

約数和(自身を除く): 389662888

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 181, 362, 724, 905, 1448, 1810, 2896, 3620, 7240, 14480, 20113, 40226, 80452, 100565, 160904, 201130, 321808, 402260, 804520, 1609040, 3640453, 7280906, 14561812, 18202265, 29123624, 36404530, 58247248, 72809060, 145618120, 291236240]

約数ペア:

[(1, 291236240), (2, 145618120), (4, 72809060), (5, 58247248), (8, 36404530), (10, 29123624), (16, 18202265), (20, 14561812), (40, 7280906), (80, 3640453), (181, 1609040), (362, 804520), (724, 402260), (905, 321808), (1448, 201130), (1810, 160904), (2896, 100565), (3620, 80452), (7240, 40226), (14480, 20113)]