21408360

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{178403}}^1$

素因数の和:178417

約数の個数: 32

約数和(自身を含む): 64225440

約数和(自身を除く): 42817080

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 178403, 356806, 535209, 713612, 892015, 1070418, 1427224, 1784030, 2140836, 2676045, 3568060, 4281672, 5352090, 7136120, 10704180, 21408360]

約数ペア:

[(1, 21408360), (2, 10704180), (3, 7136120), (4, 5352090), (5, 4281672), (6, 3568060), (8, 2676045), (10, 2140836), (12, 1784030), (15, 1427224), (20, 1070418), (24, 892015), (30, 713612), (40, 535209), (60, 356806), (120, 178403)]