18987948

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{151}}^1\times {\mathrm{499}}^1$

素因数の和:667

約数の個数: 72

約数和(自身を含む): 55328000

約数和(自身を除く): 36340052

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 63, 84, 126, 151, 252, 302, 453, 499, 604, 906, 998, 1057, 1359, 1497, 1812, 1996, 2114, 2718, 2994, 3171, 3493, 4228, 4491, 5436, 5988, 6342, 6986, 8982, 9513, 10479, 12684, 13972, 17964, 19026, 20958, 31437, 38052, 41916, 62874, 75349, 125748, 150698, 226047, 301396, 452094, 527443, 678141, 904188, 1054886, 1356282, 1582329, 2109772, 2712564, 3164658, 4746987, 6329316, 9493974, 18987948]

約数ペア:

[(1, 18987948), (2, 9493974), (3, 6329316), (4, 4746987), (6, 3164658), (7, 2712564), (9, 2109772), (12, 1582329), (14, 1356282), (18, 1054886), (21, 904188), (28, 678141), (36, 527443), (42, 452094), (63, 301396), (84, 226047), (126, 150698), (151, 125748), (252, 75349), (302, 62874), (453, 41916), (499, 38052), (604, 31437), (906, 20958), (998, 19026), (1057, 17964), (1359, 13972), (1497, 12684), (1812, 10479), (1996, 9513), (2114, 8982), (2718, 6986), (2994, 6342), (3171, 5988), (3493, 5436), (4228, 4491)]