20835585

素因数分解:

$3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{491}}^1$

素因数の和:566

約数の個数: 48

約数和(自身を含む): 38683008

約数和(自身を除く): 17847423

約数列:

[1, 3, 5, 9, 15, 23, 41, 45, 69, 115, 123, 205, 207, 345, 369, 491, 615, 943, 1035, 1473, 1845, 2455, 2829, 4419, 4715, 7365, 8487, 11293, 14145, 20131, 22095, 33879, 42435, 56465, 60393, 100655, 101637, 169395, 181179, 301965, 463013, 508185, 905895, 1389039, 2315065, 4167117, 6945195, 20835585]

約数ペア:

[(1, 20835585), (3, 6945195), (5, 4167117), (9, 2315065), (15, 1389039), (23, 905895), (41, 508185), (45, 463013), (69, 301965), (115, 181179), (123, 169395), (205, 101637), (207, 100655), (345, 60393), (369, 56465), (491, 42435), (615, 33879), (943, 22095), (1035, 20131), (1473, 14145), (1845, 11293), (2455, 8487), (2829, 7365), (4419, 4715)]