21067120

素因数分解:

$2^4\times 5^1\times {\mathrm{71}}^1\times {\mathrm{3709}}^1$

素因数の和:3793

約数の個数: 40

約数和(自身を含む): 49684320

約数和(自身を除く): 28617200

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 71, 80, 142, 284, 355, 568, 710, 1136, 1420, 2840, 3709, 5680, 7418, 14836, 18545, 29672, 37090, 59344, 74180, 148360, 263339, 296720, 526678, 1053356, 1316695, 2106712, 2633390, 4213424, 5266780, 10533560, 21067120]

約数ペア:

[(1, 21067120), (2, 10533560), (4, 5266780), (5, 4213424), (8, 2633390), (10, 2106712), (16, 1316695), (20, 1053356), (40, 526678), (71, 296720), (80, 263339), (142, 148360), (284, 74180), (355, 59344), (568, 37090), (710, 29672), (1136, 18545), (1420, 14836), (2840, 7418), (3709, 5680)]