21244620

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{4987}}^1$

素因数の和:5070

約数の個数: 48

約数和(自身を含む): 60334848

約数和(自身を除く): 39090228

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 71, 142, 213, 284, 355, 426, 710, 852, 1065, 1420, 2130, 4260, 4987, 9974, 14961, 19948, 24935, 29922, 49870, 59844, 74805, 99740, 149610, 299220, 354077, 708154, 1062231, 1416308, 1770385, 2124462, 3540770, 4248924, 5311155, 7081540, 10622310, 21244620]

約数ペア:

[(1, 21244620), (2, 10622310), (3, 7081540), (4, 5311155), (5, 4248924), (6, 3540770), (10, 2124462), (12, 1770385), (15, 1416308), (20, 1062231), (30, 708154), (60, 354077), (71, 299220), (142, 149610), (213, 99740), (284, 74805), (355, 59844), (426, 49870), (710, 29922), (852, 24935), (1065, 19948), (1420, 14961), (2130, 9974), (4260, 4987)]