21507630

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{137}}^1\times {\mathrm{5233}}^1$

素因数の和:5380

約数の個数: 32

約数和(自身を含む): 52005024

約数和(自身を除く): 30497394

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 137, 274, 411, 685, 822, 1370, 2055, 4110, 5233, 10466, 15699, 26165, 31398, 52330, 78495, 156990, 716921, 1433842, 2150763, 3584605, 4301526, 7169210, 10753815, 21507630]

約数ペア:

[(1, 21507630), (2, 10753815), (3, 7169210), (5, 4301526), (6, 3584605), (10, 2150763), (15, 1433842), (30, 716921), (137, 156990), (274, 78495), (411, 52330), (685, 31398), (822, 26165), (1370, 15699), (2055, 10466), (4110, 5233)]