21695565

素因数分解:

$3^1\times 5^1\times {\mathrm{61}}^1\times {\mathrm{131}}^1\times {\mathrm{181}}^1$

素因数の和:381

約数の個数: 32

約数和(自身を含む): 35747712

約数和(自身を除く): 14052147

約数列:

[1, 3, 5, 15, 61, 131, 181, 183, 305, 393, 543, 655, 905, 915, 1965, 2715, 7991, 11041, 23711, 23973, 33123, 39955, 55205, 71133, 118555, 119865, 165615, 355665, 1446371, 4339113, 7231855, 21695565]

約数ペア:

[(1, 21695565), (3, 7231855), (5, 4339113), (15, 1446371), (61, 355665), (131, 165615), (181, 119865), (183, 118555), (305, 71133), (393, 55205), (543, 39955), (655, 33123), (905, 23973), (915, 23711), (1965, 11041), (2715, 7991)]