2770780

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{109}}^1$

素因数の和:190

約数の個数: 48

約数和(自身を含む): 6209280

約数和(自身を除く): 3438500

約数列:

[1, 2, 4, 5, 10, 20, 31, 41, 62, 82, 109, 124, 155, 164, 205, 218, 310, 410, 436, 545, 620, 820, 1090, 1271, 2180, 2542, 3379, 4469, 5084, 6355, 6758, 8938, 12710, 13516, 16895, 17876, 22345, 25420, 33790, 44690, 67580, 89380, 138539, 277078, 554156, 692695, 1385390, 2770780]

約数ペア:

[(1, 2770780), (2, 1385390), (4, 692695), (5, 554156), (10, 277078), (20, 138539), (31, 89380), (41, 67580), (62, 44690), (82, 33790), (109, 25420), (124, 22345), (155, 17876), (164, 16895), (205, 13516), (218, 12710), (310, 8938), (410, 6758), (436, 6355), (545, 5084), (620, 4469), (820, 3379), (1090, 2542), (1271, 2180)]