78486320

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{89189}}^1$

素因数の和:89213

約数の個数: 40

約数和(自身を含む): 199072080

約数和(自身を除く): 120585760

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 440, 880, 89189, 178378, 356756, 445945, 713512, 891890, 981079, 1427024, 1783780, 1962158, 3567560, 3924316, 4905395, 7135120, 7848632, 9810790, 15697264, 19621580, 39243160, 78486320]

約数ペア:

[(1, 78486320), (2, 39243160), (4, 19621580), (5, 15697264), (8, 9810790), (10, 7848632), (11, 7135120), (16, 4905395), (20, 3924316), (22, 3567560), (40, 1962158), (44, 1783780), (55, 1427024), (80, 981079), (88, 891890), (110, 713512), (176, 445945), (220, 356756), (440, 178378), (880, 89189)]