20461287

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{101}}^1\times {\mathrm{877}}^1$

素因数の和:999

約数の個数: 32

約数和(自身を含む): 34389504

約数和(自身を除く): 13928217

約数列:

[1, 3, 7, 11, 21, 33, 77, 101, 231, 303, 707, 877, 1111, 2121, 2631, 3333, 6139, 7777, 9647, 18417, 23331, 28941, 67529, 88577, 202587, 265731, 620039, 974347, 1860117, 2923041, 6820429, 20461287]

約数ペア:

[(1, 20461287), (3, 6820429), (7, 2923041), (11, 1860117), (21, 974347), (33, 620039), (77, 265731), (101, 202587), (231, 88577), (303, 67529), (707, 28941), (877, 23331), (1111, 18417), (2121, 9647), (2631, 7777), (3333, 6139)]