21371680

素因数分解:

$2^5\times 5^1\times {\mathrm{11}}^1\times {\mathrm{12143}}^1$

素因数の和:12169

約数の個数: 48

約数和(自身を含む): 55085184

約数和(自身を除く): 33713504

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 80, 88, 110, 160, 176, 220, 352, 440, 880, 1760, 12143, 24286, 48572, 60715, 97144, 121430, 133573, 194288, 242860, 267146, 388576, 485720, 534292, 667865, 971440, 1068584, 1335730, 1942880, 2137168, 2671460, 4274336, 5342920, 10685840, 21371680]

約数ペア:

[(1, 21371680), (2, 10685840), (4, 5342920), (5, 4274336), (8, 2671460), (10, 2137168), (11, 1942880), (16, 1335730), (20, 1068584), (22, 971440), (32, 667865), (40, 534292), (44, 485720), (55, 388576), (80, 267146), (88, 242860), (110, 194288), (160, 133573), (176, 121430), (220, 97144), (352, 60715), (440, 48572), (880, 24286), (1760, 12143)]