198547760

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{145991}}^1$

素因数の和:146021

約数の個数: 40

約数和(自身を含む): 488781216

約数和(自身を除く): 290233456

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 170, 272, 340, 680, 1360, 145991, 291982, 583964, 729955, 1167928, 1459910, 2335856, 2481847, 2919820, 4963694, 5839640, 9927388, 11679280, 12409235, 19854776, 24818470, 39709552, 49636940, 99273880, 198547760]

約数ペア:

[(1, 198547760), (2, 99273880), (4, 49636940), (5, 39709552), (8, 24818470), (10, 19854776), (16, 12409235), (17, 11679280), (20, 9927388), (34, 5839640), (40, 4963694), (68, 2919820), (80, 2481847), (85, 2335856), (136, 1459910), (170, 1167928), (272, 729955), (340, 583964), (680, 291982), (1360, 145991)]