21661695

素因数分解:

$3^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{503}}^1$

素因数の和:557

約数の個数: 64

約数和(自身を含む): 43545600

約数和(自身を除く): 21883905

約数列:

[1, 3, 5, 9, 11, 15, 27, 29, 33, 45, 55, 87, 99, 135, 145, 165, 261, 297, 319, 435, 495, 503, 783, 957, 1305, 1485, 1509, 1595, 2515, 2871, 3915, 4527, 4785, 5533, 7545, 8613, 13581, 14355, 14587, 16599, 22635, 27665, 43065, 43761, 49797, 67905, 72935, 82995, 131283, 149391, 160457, 218805, 248985, 393849, 481371, 656415, 746955, 802285, 1444113, 1969245, 2406855, 4332339, 7220565, 21661695]

約数ペア:

[(1, 21661695), (3, 7220565), (5, 4332339), (9, 2406855), (11, 1969245), (15, 1444113), (27, 802285), (29, 746955), (33, 656415), (45, 481371), (55, 393849), (87, 248985), (99, 218805), (135, 160457), (145, 149391), (165, 131283), (261, 82995), (297, 72935), (319, 67905), (435, 49797), (495, 43761), (503, 43065), (783, 27665), (957, 22635), (1305, 16599), (1485, 14587), (1509, 14355), (1595, 13581), (2515, 8613), (2871, 7545), (3915, 5533), (4527, 4785)]