19620225

素因数分解:

$3^4\times 5^2\times {\mathrm{9689}}^1$

素因数の和:9711

約数の個数: 30

約数和(自身を含む): 36347190

約数和(自身を除く): 16726965

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 75, 81, 135, 225, 405, 675, 2025, 9689, 29067, 48445, 87201, 145335, 242225, 261603, 436005, 726675, 784809, 1308015, 2180025, 3924045, 6540075, 19620225]

約数ペア:

[(1, 19620225), (3, 6540075), (5, 3924045), (9, 2180025), (15, 1308015), (25, 784809), (27, 726675), (45, 436005), (75, 261603), (81, 242225), (135, 145335), (225, 87201), (405, 48445), (675, 29067), (2025, 9689)]