216658395

素因数分解:

$3^4\times 5^1\times {\mathrm{509}}^1\times {\mathrm{1051}}^1$

素因数の和:1577

約数の個数: 40

約数和(自身を含む): 389513520

約数和(自身を除く): 172855125

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 509, 1051, 1527, 2545, 3153, 4581, 5255, 7635, 9459, 13743, 15765, 22905, 28377, 41229, 47295, 68715, 85131, 141885, 206145, 425655, 534959, 1604877, 2674795, 4814631, 8024385, 14443893, 24073155, 43331679, 72219465, 216658395]

約数ペア:

[(1, 216658395), (3, 72219465), (5, 43331679), (9, 24073155), (15, 14443893), (27, 8024385), (45, 4814631), (81, 2674795), (135, 1604877), (405, 534959), (509, 425655), (1051, 206145), (1527, 141885), (2545, 85131), (3153, 68715), (4581, 47295), (5255, 41229), (7635, 28377), (9459, 22905), (13743, 15765)]