21501675

素因数分解:

$3^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{7351}}^1$

素因数の和:7380

約数の個数: 36

約数和(自身を含む): 41479984

約数和(自身を除く): 19978309

約数列:

[1, 3, 5, 9, 13, 15, 25, 39, 45, 65, 75, 117, 195, 225, 325, 585, 975, 2925, 7351, 22053, 36755, 66159, 95563, 110265, 183775, 286689, 330795, 477815, 551325, 860067, 1433445, 1653975, 2389075, 4300335, 7167225, 21501675]

約数ペア:

[(1, 21501675), (3, 7167225), (5, 4300335), (9, 2389075), (13, 1653975), (15, 1433445), (25, 860067), (39, 551325), (45, 477815), (65, 330795), (75, 286689), (117, 183775), (195, 110265), (225, 95563), (325, 66159), (585, 36755), (975, 22053), (2925, 7351)]