19994760

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{55541}}^1$

素因数の和:55558

約数の個数: 48

約数和(自身を含む): 64984140

約数和(自身を除く): 44989380

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 30, 36, 40, 45, 60, 72, 90, 120, 180, 360, 55541, 111082, 166623, 222164, 277705, 333246, 444328, 499869, 555410, 666492, 833115, 999738, 1110820, 1332984, 1666230, 1999476, 2221640, 2499345, 3332460, 3998952, 4998690, 6664920, 9997380, 19994760]

約数ペア:

[(1, 19994760), (2, 9997380), (3, 6664920), (4, 4998690), (5, 3998952), (6, 3332460), (8, 2499345), (9, 2221640), (10, 1999476), (12, 1666230), (15, 1332984), (18, 1110820), (20, 999738), (24, 833115), (30, 666492), (36, 555410), (40, 499869), (45, 444328), (60, 333246), (72, 277705), (90, 222164), (120, 166623), (180, 111082), (360, 55541)]