21806824

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{307}}^1\times {\mathrm{683}}^1$

素因数の和:1009

約数の個数: 32

約数和(自身を含む): 44241120

約数和(自身を除く): 22434296

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 307, 614, 683, 1228, 1366, 2456, 2732, 3991, 5464, 7982, 8879, 15964, 17758, 31928, 35516, 71032, 209681, 419362, 838724, 1677448, 2725853, 5451706, 10903412, 21806824]

約数ペア:

[(1, 21806824), (2, 10903412), (4, 5451706), (8, 2725853), (13, 1677448), (26, 838724), (52, 419362), (104, 209681), (307, 71032), (614, 35516), (683, 31928), (1228, 17758), (1366, 15964), (2456, 8879), (2732, 7982), (3991, 5464)]