18291320

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{727}}^1$

素因数の和:792

約数の個数: 64

約数和(自身を含む): 44815680

約数和(自身を除く): 26524360

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 37, 40, 68, 74, 85, 136, 148, 170, 185, 296, 340, 370, 629, 680, 727, 740, 1258, 1454, 1480, 2516, 2908, 3145, 3635, 5032, 5816, 6290, 7270, 12359, 12580, 14540, 24718, 25160, 26899, 29080, 49436, 53798, 61795, 98872, 107596, 123590, 134495, 215192, 247180, 268990, 457283, 494360, 537980, 914566, 1075960, 1829132, 2286415, 3658264, 4572830, 9145660, 18291320]

約数ペア:

[(1, 18291320), (2, 9145660), (4, 4572830), (5, 3658264), (8, 2286415), (10, 1829132), (17, 1075960), (20, 914566), (34, 537980), (37, 494360), (40, 457283), (68, 268990), (74, 247180), (85, 215192), (136, 134495), (148, 123590), (170, 107596), (185, 98872), (296, 61795), (340, 53798), (370, 49436), (629, 29080), (680, 26899), (727, 25160), (740, 24718), (1258, 14540), (1454, 12580), (1480, 12359), (2516, 7270), (2908, 6290), (3145, 5816), (3635, 5032)]