1949207920

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{2215009}}^1$

素因数の和:2215033

約数の個数: 40

約数和(自身を含む): 4943902320

約数和(自身を除く): 2994694400

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 440, 880, 2215009, 4430018, 8860036, 11075045, 17720072, 22150090, 24365099, 35440144, 44300180, 48730198, 88600360, 97460396, 121825495, 177200720, 194920792, 243650990, 389841584, 487301980, 974603960, 1949207920]

約数ペア:

[(1, 1949207920), (2, 974603960), (4, 487301980), (5, 389841584), (8, 243650990), (10, 194920792), (11, 177200720), (16, 121825495), (20, 97460396), (22, 88600360), (40, 48730198), (44, 44300180), (55, 35440144), (80, 24365099), (88, 22150090), (110, 17720072), (176, 11075045), (220, 8860036), (440, 4430018), (880, 2215009)]