20921159536

素因数分解:

$2^4\times {\mathrm{23}}^1\times {\mathrm{163}}^1\times {\mathrm{348779}}^1$

素因数の和:348973

約数の個数: 40

約数和(自身を含む): 42556740480

約数和(自身を除く): 21635580944

約数列:

[1, 2, 4, 8, 16, 23, 46, 92, 163, 184, 326, 368, 652, 1304, 2608, 3749, 7498, 14996, 29992, 59984, 348779, 697558, 1395116, 2790232, 5580464, 8021917, 16043834, 32087668, 56850977, 64175336, 113701954, 128350672, 227403908, 454807816, 909615632, 1307572471, 2615144942, 5230289884, 10460579768, 20921159536]

約数ペア:

[(1, 20921159536), (2, 10460579768), (4, 5230289884), (8, 2615144942), (16, 1307572471), (23, 909615632), (46, 454807816), (92, 227403908), (163, 128350672), (184, 113701954), (326, 64175336), (368, 56850977), (652, 32087668), (1304, 16043834), (2608, 8021917), (3749, 5580464), (7498, 2790232), (14996, 1395116), (29992, 697558), (59984, 348779)]