20898810

素因数分解:

$2^1\times 3^4\times 5^1\times {\mathrm{25801}}^1$

素因数の和:25820

約数の個数: 40

約数和(自身を含む): 56196756

約数和(自身を除く): 35297946

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 27, 30, 45, 54, 81, 90, 135, 162, 270, 405, 810, 25801, 51602, 77403, 129005, 154806, 232209, 258010, 387015, 464418, 696627, 774030, 1161045, 1393254, 2089881, 2322090, 3483135, 4179762, 6966270, 10449405, 20898810]

約数ペア:

[(1, 20898810), (2, 10449405), (3, 6966270), (5, 4179762), (6, 3483135), (9, 2322090), (10, 2089881), (15, 1393254), (18, 1161045), (27, 774030), (30, 696627), (45, 464418), (54, 387015), (81, 258010), (90, 232209), (135, 154806), (162, 129005), (270, 77403), (405, 51602), (810, 25801)]