21986727

素因数分解:

$3^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{79}}^1\times {\mathrm{457}}^1$

素因数の和:575

約数の個数: 32

約数和(自身を含む): 35174400

約数和(自身を除く): 13187673

約数列:

[1, 3, 7, 21, 29, 79, 87, 203, 237, 457, 553, 609, 1371, 1659, 2291, 3199, 6873, 9597, 13253, 16037, 36103, 39759, 48111, 92771, 108309, 252721, 278313, 758163, 1046987, 3140961, 7328909, 21986727]

約数ペア:

[(1, 21986727), (3, 7328909), (7, 3140961), (21, 1046987), (29, 758163), (79, 278313), (87, 252721), (203, 108309), (237, 92771), (457, 48111), (553, 39759), (609, 36103), (1371, 16037), (1659, 13253), (2291, 9597), (3199, 6873)]