20778248

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{223}}^1\times {\mathrm{613}}^1$

素因数の和:861

約数の個数: 32

約数和(自身を含む): 41260800

約数和(自身を除く): 20482552

約数列:

[1, 2, 4, 8, 19, 38, 76, 152, 223, 446, 613, 892, 1226, 1784, 2452, 4237, 4904, 8474, 11647, 16948, 23294, 33896, 46588, 93176, 136699, 273398, 546796, 1093592, 2597281, 5194562, 10389124, 20778248]

約数ペア:

[(1, 20778248), (2, 10389124), (4, 5194562), (8, 2597281), (19, 1093592), (38, 546796), (76, 273398), (152, 136699), (223, 93176), (446, 46588), (613, 33896), (892, 23294), (1226, 16948), (1784, 11647), (2452, 8474), (4237, 4904)]