81680060

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{7577}}^1$

素因数の和:7611

約数の個数: 72

約数和(自身を含む): 217700784

約数和(自身を除く): 136020724

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 49, 55, 70, 77, 98, 110, 140, 154, 196, 220, 245, 308, 385, 490, 539, 770, 980, 1078, 1540, 2156, 2695, 5390, 7577, 10780, 15154, 30308, 37885, 53039, 75770, 83347, 106078, 151540, 166694, 212156, 265195, 333388, 371273, 416735, 530390, 583429, 742546, 833470, 1060780, 1166858, 1485092, 1666940, 1856365, 2333716, 2917145, 3712730, 4084003, 5834290, 7425460, 8168006, 11668580, 16336012, 20420015, 40840030, 81680060]

約数ペア:

[(1, 81680060), (2, 40840030), (4, 20420015), (5, 16336012), (7, 11668580), (10, 8168006), (11, 7425460), (14, 5834290), (20, 4084003), (22, 3712730), (28, 2917145), (35, 2333716), (44, 1856365), (49, 1666940), (55, 1485092), (70, 1166858), (77, 1060780), (98, 833470), (110, 742546), (140, 583429), (154, 530390), (196, 416735), (220, 371273), (245, 333388), (308, 265195), (385, 212156), (490, 166694), (539, 151540), (770, 106078), (980, 83347), (1078, 75770), (1540, 53039), (2156, 37885), (2695, 30308), (5390, 15154), (7577, 10780)]