21899925

素因数分解:

$3^2\times 5^2\times {\mathrm{131}}^1\times {\mathrm{743}}^1$

素因数の和:890

約数の個数: 36

約数和(自身を含む): 39577824

約数和(自身を除く): 17677899

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 131, 225, 393, 655, 743, 1179, 1965, 2229, 3275, 3715, 5895, 6687, 9825, 11145, 18575, 29475, 33435, 55725, 97333, 167175, 291999, 486665, 875997, 1459995, 2433325, 4379985, 7299975, 21899925]

約数ペア:

[(1, 21899925), (3, 7299975), (5, 4379985), (9, 2433325), (15, 1459995), (25, 875997), (45, 486665), (75, 291999), (131, 167175), (225, 97333), (393, 55725), (655, 33435), (743, 29475), (1179, 18575), (1965, 11145), (2229, 9825), (3275, 6687), (3715, 5895)]