2819980

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{181}}^1$

素因数の和:250

約数の個数: 48

約数和(自身を含む): 6420960

約数和(自身を除く): 3600980

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 41, 76, 82, 95, 164, 181, 190, 205, 362, 380, 410, 724, 779, 820, 905, 1558, 1810, 3116, 3439, 3620, 3895, 6878, 7421, 7790, 13756, 14842, 15580, 17195, 29684, 34390, 37105, 68780, 74210, 140999, 148420, 281998, 563996, 704995, 1409990, 2819980]

約数ペア:

[(1, 2819980), (2, 1409990), (4, 704995), (5, 563996), (10, 281998), (19, 148420), (20, 140999), (38, 74210), (41, 68780), (76, 37105), (82, 34390), (95, 29684), (164, 17195), (181, 15580), (190, 14842), (205, 13756), (362, 7790), (380, 7421), (410, 6878), (724, 3895), (779, 3620), (820, 3439), (905, 3116), (1558, 1810)]