21540780

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{119671}}^1$

素因数の和:119686

約数の個数: 36

約数和(自身を含む): 65340912

約数和(自身を除く): 43800132

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 119671, 239342, 359013, 478684, 598355, 718026, 1077039, 1196710, 1436052, 1795065, 2154078, 2393420, 3590130, 4308156, 5385195, 7180260, 10770390, 21540780]

約数ペア:

[(1, 21540780), (2, 10770390), (3, 7180260), (4, 5385195), (5, 4308156), (6, 3590130), (9, 2393420), (10, 2154078), (12, 1795065), (15, 1436052), (18, 1196710), (20, 1077039), (30, 718026), (36, 598355), (45, 478684), (60, 359013), (90, 239342), (180, 119671)]