20812144

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{223}}^1\times {\mathrm{307}}^1$

素因数の和:557

約数の個数: 40

約数和(自身を含む): 42775040

約数和(自身を除く): 21962896

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 223, 304, 307, 446, 614, 892, 1228, 1784, 2456, 3568, 4237, 4912, 5833, 8474, 11666, 16948, 23332, 33896, 46664, 67792, 68461, 93328, 136922, 273844, 547688, 1095376, 1300759, 2601518, 5203036, 10406072, 20812144]

約数ペア:

[(1, 20812144), (2, 10406072), (4, 5203036), (8, 2601518), (16, 1300759), (19, 1095376), (38, 547688), (76, 273844), (152, 136922), (223, 93328), (304, 68461), (307, 67792), (446, 46664), (614, 33896), (892, 23332), (1228, 16948), (1784, 11666), (2456, 8474), (3568, 5833), (4237, 4912)]