21366279

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{307}}^1$

素因数の和:380

約数の個数: 48

約数和(自身を含む): 36516480

約数和(自身を除く): 15150201

約数列:

[1, 3, 9, 11, 19, 33, 37, 57, 99, 111, 171, 209, 307, 333, 407, 627, 703, 921, 1221, 1881, 2109, 2763, 3377, 3663, 5833, 6327, 7733, 10131, 11359, 17499, 23199, 30393, 34077, 52497, 64163, 69597, 102231, 124949, 192489, 215821, 374847, 577467, 647463, 1124541, 1942389, 2374031, 7122093, 21366279]

約数ペア:

[(1, 21366279), (3, 7122093), (9, 2374031), (11, 1942389), (19, 1124541), (33, 647463), (37, 577467), (57, 374847), (99, 215821), (111, 192489), (171, 124949), (209, 102231), (307, 69597), (333, 64163), (407, 52497), (627, 34077), (703, 30393), (921, 23199), (1221, 17499), (1881, 11359), (2109, 10131), (2763, 7733), (3377, 6327), (3663, 5833)]