21498555

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{2689}}^1$

素因数の和:2751

約数の個数: 32

約数和(自身を含む): 37961280

約数和(自身を除く): 16462725

約数列:

[1, 3, 5, 13, 15, 39, 41, 65, 123, 195, 205, 533, 615, 1599, 2665, 2689, 7995, 8067, 13445, 34957, 40335, 104871, 110249, 174785, 330747, 524355, 551245, 1433237, 1653735, 4299711, 7166185, 21498555]

約数ペア:

[(1, 21498555), (3, 7166185), (5, 4299711), (13, 1653735), (15, 1433237), (39, 551245), (41, 524355), (65, 330747), (123, 174785), (195, 110249), (205, 104871), (533, 40335), (615, 34957), (1599, 13445), (2665, 8067), (2689, 7995)]