68707880

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{79}}^1\times {\mathrm{1279}}^1$

素因数の和:1386

約数の個数: 64

約数和(自身を含む): 165888000

約数和(自身を除く): 97180120

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 79, 85, 136, 158, 170, 316, 340, 395, 632, 680, 790, 1279, 1343, 1580, 2558, 2686, 3160, 5116, 5372, 6395, 6715, 10232, 10744, 12790, 13430, 21743, 25580, 26860, 43486, 51160, 53720, 86972, 101041, 108715, 173944, 202082, 217430, 404164, 434860, 505205, 808328, 869720, 1010410, 1717697, 2020820, 3435394, 4041640, 6870788, 8588485, 13741576, 17176970, 34353940, 68707880]

約数ペア:

[(1, 68707880), (2, 34353940), (4, 17176970), (5, 13741576), (8, 8588485), (10, 6870788), (17, 4041640), (20, 3435394), (34, 2020820), (40, 1717697), (68, 1010410), (79, 869720), (85, 808328), (136, 505205), (158, 434860), (170, 404164), (316, 217430), (340, 202082), (395, 173944), (632, 108715), (680, 101041), (790, 86972), (1279, 53720), (1343, 51160), (1580, 43486), (2558, 26860), (2686, 25580), (3160, 21743), (5116, 13430), (5372, 12790), (6395, 10744), (6715, 10232)]