281023840

素因数分解:

$2^5\times 5^1\times {\mathrm{41}}^1\times {\mathrm{42839}}^1$

素因数の和:42895

約数の個数: 48

約数和(自身を含む): 680127840

約数和(自身を除く): 399104000

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 41, 80, 82, 160, 164, 205, 328, 410, 656, 820, 1312, 1640, 3280, 6560, 42839, 85678, 171356, 214195, 342712, 428390, 685424, 856780, 1370848, 1713560, 1756399, 3427120, 3512798, 6854240, 7025596, 8781995, 14051192, 17563990, 28102384, 35127980, 56204768, 70255960, 140511920, 281023840]

約数ペア:

[(1, 281023840), (2, 140511920), (4, 70255960), (5, 56204768), (8, 35127980), (10, 28102384), (16, 17563990), (20, 14051192), (32, 8781995), (40, 7025596), (41, 6854240), (80, 3512798), (82, 3427120), (160, 1756399), (164, 1713560), (205, 1370848), (328, 856780), (410, 685424), (656, 428390), (820, 342712), (1312, 214195), (1640, 171356), (3280, 85678), (6560, 42839)]