19998690

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{127}}^1\times {\mathrm{181}}^1$

素因数の和:347

約数の個数: 64

約数和(自身を含む): 50319360

約数和(自身を除く): 30320670

約数列:

[1, 2, 3, 5, 6, 10, 15, 29, 30, 58, 87, 127, 145, 174, 181, 254, 290, 362, 381, 435, 543, 635, 762, 870, 905, 1086, 1270, 1810, 1905, 2715, 3683, 3810, 5249, 5430, 7366, 10498, 11049, 15747, 18415, 22098, 22987, 26245, 31494, 36830, 45974, 52490, 55245, 68961, 78735, 110490, 114935, 137922, 157470, 229870, 344805, 666623, 689610, 1333246, 1999869, 3333115, 3999738, 6666230, 9999345, 19998690]

約数ペア:

[(1, 19998690), (2, 9999345), (3, 6666230), (5, 3999738), (6, 3333115), (10, 1999869), (15, 1333246), (29, 689610), (30, 666623), (58, 344805), (87, 229870), (127, 157470), (145, 137922), (174, 114935), (181, 110490), (254, 78735), (290, 68961), (362, 55245), (381, 52490), (435, 45974), (543, 36830), (635, 31494), (762, 26245), (870, 22987), (905, 22098), (1086, 18415), (1270, 15747), (1810, 11049), (1905, 10498), (2715, 7366), (3683, 5430), (3810, 5249)]