20942901

素因数分解:

$3^3\times 7^1\times {\mathrm{29}}^1\times {\mathrm{3821}}^1$

素因数の和:3866

約数の個数: 32

約数和(自身を含む): 36691200

約数和(自身を除く): 15748299

約数列:

[1, 3, 7, 9, 21, 27, 29, 63, 87, 189, 203, 261, 609, 783, 1827, 3821, 5481, 11463, 26747, 34389, 80241, 103167, 110809, 240723, 332427, 722169, 775663, 997281, 2326989, 2991843, 6980967, 20942901]

約数ペア:

[(1, 20942901), (3, 6980967), (7, 2991843), (9, 2326989), (21, 997281), (27, 775663), (29, 722169), (63, 332427), (87, 240723), (189, 110809), (203, 103167), (261, 80241), (609, 34389), (783, 26747), (1827, 11463), (3821, 5481)]