19867760

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{107}}^1\times {\mathrm{211}}^1$

素因数の和:342

約数の個数: 80

約数和(自身を含む): 51103872

約数和(自身を除く): 31236112

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 107, 110, 176, 211, 214, 220, 422, 428, 440, 535, 844, 856, 880, 1055, 1070, 1177, 1688, 1712, 2110, 2140, 2321, 2354, 3376, 4220, 4280, 4642, 4708, 5885, 8440, 8560, 9284, 9416, 11605, 11770, 16880, 18568, 18832, 22577, 23210, 23540, 37136, 45154, 46420, 47080, 90308, 92840, 94160, 112885, 180616, 185680, 225770, 248347, 361232, 451540, 496694, 903080, 993388, 1241735, 1806160, 1986776, 2483470, 3973552, 4966940, 9933880, 19867760]

約数ペア:

[(1, 19867760), (2, 9933880), (4, 4966940), (5, 3973552), (8, 2483470), (10, 1986776), (11, 1806160), (16, 1241735), (20, 993388), (22, 903080), (40, 496694), (44, 451540), (55, 361232), (80, 248347), (88, 225770), (107, 185680), (110, 180616), (176, 112885), (211, 94160), (214, 92840), (220, 90308), (422, 47080), (428, 46420), (440, 45154), (535, 37136), (844, 23540), (856, 23210), (880, 22577), (1055, 18832), (1070, 18568), (1177, 16880), (1688, 11770), (1712, 11605), (2110, 9416), (2140, 9284), (2321, 8560), (2354, 8440), (3376, 5885), (4220, 4708), (4280, 4642)]