20009770

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^2\times {\mathrm{23}}^1\times {\mathrm{719}}^1$

素因数の和:771

約数の個数: 48

約数和(自身を含む): 41368320

約数和(自身を除く): 21358550

約数列:

[1, 2, 5, 10, 11, 22, 23, 46, 55, 110, 115, 121, 230, 242, 253, 506, 605, 719, 1210, 1265, 1438, 2530, 2783, 3595, 5566, 7190, 7909, 13915, 15818, 16537, 27830, 33074, 39545, 79090, 82685, 86999, 165370, 173998, 181907, 363814, 434995, 869990, 909535, 1819070, 2000977, 4001954, 10004885, 20009770]

約数ペア:

[(1, 20009770), (2, 10004885), (5, 4001954), (10, 2000977), (11, 1819070), (22, 909535), (23, 869990), (46, 434995), (55, 363814), (110, 181907), (115, 173998), (121, 165370), (230, 86999), (242, 82685), (253, 79090), (506, 39545), (605, 33074), (719, 27830), (1210, 16537), (1265, 15818), (1438, 13915), (2530, 7909), (2783, 7190), (3595, 5566)]