21935940

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{28123}}^1$

素因数の和:28148

約数の個数: 48

約数和(自身を含む): 66147648

約数和(自身を除く): 44211708

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780, 28123, 56246, 84369, 112492, 140615, 168738, 281230, 337476, 365599, 421845, 562460, 731198, 843690, 1096797, 1462396, 1687380, 1827995, 2193594, 3655990, 4387188, 5483985, 7311980, 10967970, 21935940]

約数ペア:

[(1, 21935940), (2, 10967970), (3, 7311980), (4, 5483985), (5, 4387188), (6, 3655990), (10, 2193594), (12, 1827995), (13, 1687380), (15, 1462396), (20, 1096797), (26, 843690), (30, 731198), (39, 562460), (52, 421845), (60, 365599), (65, 337476), (78, 281230), (130, 168738), (156, 140615), (195, 112492), (260, 84369), (390, 56246), (780, 28123)]