21579540

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{457}}^1\times {\mathrm{787}}^1$

素因数の和:1256

約数の個数: 48

約数和(自身を含む): 60631872

約数和(自身を除く): 39052332

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 457, 787, 914, 1371, 1574, 1828, 2285, 2361, 2742, 3148, 3935, 4570, 4722, 5484, 6855, 7870, 9140, 9444, 11805, 13710, 15740, 23610, 27420, 47220, 359659, 719318, 1078977, 1438636, 1798295, 2157954, 3596590, 4315908, 5394885, 7193180, 10789770, 21579540]

約数ペア:

[(1, 21579540), (2, 10789770), (3, 7193180), (4, 5394885), (5, 4315908), (6, 3596590), (10, 2157954), (12, 1798295), (15, 1438636), (20, 1078977), (30, 719318), (60, 359659), (457, 47220), (787, 27420), (914, 23610), (1371, 15740), (1574, 13710), (1828, 11805), (2285, 9444), (2361, 9140), (2742, 7870), (3148, 6855), (3935, 5484), (4570, 4722)]