21608685

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{181}}^1\times {\mathrm{379}}^1$

素因数の和:578

約数の個数: 48

約数和(自身を含む): 43155840

約数和(自身を除く): 21547155

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 105, 181, 315, 379, 543, 905, 1137, 1267, 1629, 1895, 2653, 2715, 3411, 3801, 5685, 6335, 7959, 8145, 11403, 13265, 17055, 19005, 23877, 39795, 57015, 68599, 119385, 205797, 342995, 480193, 617391, 1028985, 1440579, 2400965, 3086955, 4321737, 7202895, 21608685]

約数ペア:

[(1, 21608685), (3, 7202895), (5, 4321737), (7, 3086955), (9, 2400965), (15, 1440579), (21, 1028985), (35, 617391), (45, 480193), (63, 342995), (105, 205797), (181, 119385), (315, 68599), (379, 57015), (543, 39795), (905, 23877), (1137, 19005), (1267, 17055), (1629, 13265), (1895, 11403), (2653, 8145), (2715, 7959), (3411, 6335), (3801, 5685)]