778940

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{79}}^1$

素因数の和:134

約数の個数: 48

約数和(自身を含む): 1814400

約数和(自身を除く): 1035460

約数列:

[1, 2, 4, 5, 10, 17, 20, 29, 34, 58, 68, 79, 85, 116, 145, 158, 170, 290, 316, 340, 395, 493, 580, 790, 986, 1343, 1580, 1972, 2291, 2465, 2686, 4582, 4930, 5372, 6715, 9164, 9860, 11455, 13430, 22910, 26860, 38947, 45820, 77894, 155788, 194735, 389470, 778940]

約数ペア:

[(1, 778940), (2, 389470), (4, 194735), (5, 155788), (10, 77894), (17, 45820), (20, 38947), (29, 26860), (34, 22910), (58, 13430), (68, 11455), (79, 9860), (85, 9164), (116, 6715), (145, 5372), (158, 4930), (170, 4582), (290, 2686), (316, 2465), (340, 2291), (395, 1972), (493, 1580), (580, 1343), (790, 986)]