21084784

素因数分解:

$2^4\times 7^1\times {\mathrm{79}}^1\times {\mathrm{2383}}^1$

素因数の和:2477

約数の個数: 40

約数和(自身を含む): 47298560

約数和(自身を除く): 26213776

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 79, 112, 158, 316, 553, 632, 1106, 1264, 2212, 2383, 4424, 4766, 8848, 9532, 16681, 19064, 33362, 38128, 66724, 133448, 188257, 266896, 376514, 753028, 1317799, 1506056, 2635598, 3012112, 5271196, 10542392, 21084784]

約数ペア:

[(1, 21084784), (2, 10542392), (4, 5271196), (7, 3012112), (8, 2635598), (14, 1506056), (16, 1317799), (28, 753028), (56, 376514), (79, 266896), (112, 188257), (158, 133448), (316, 66724), (553, 38128), (632, 33362), (1106, 19064), (1264, 16681), (2212, 9532), (2383, 8848), (4424, 4766)]