1978425

素因数分解:

$3^4\times 5^2\times {\mathrm{977}}^1$

素因数の和:999

約数の個数: 30

約数和(自身を含む): 3668478

約数和(自身を除く): 1690053

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 75, 81, 135, 225, 405, 675, 977, 2025, 2931, 4885, 8793, 14655, 24425, 26379, 43965, 73275, 79137, 131895, 219825, 395685, 659475, 1978425]

約数ペア:

[(1, 1978425), (3, 659475), (5, 395685), (9, 219825), (15, 131895), (25, 79137), (27, 73275), (45, 43965), (75, 26379), (81, 24425), (135, 14655), (225, 8793), (405, 4885), (675, 2931), (977, 2025)]