68640920

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{2441}}^1$

素因数の和:2508

約数の個数: 64

約数和(自身を含む): 167032800

約数和(自身を除く): 98391880

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 37, 38, 40, 74, 76, 95, 148, 152, 185, 190, 296, 370, 380, 703, 740, 760, 1406, 1480, 2441, 2812, 3515, 4882, 5624, 7030, 9764, 12205, 14060, 19528, 24410, 28120, 46379, 48820, 90317, 92758, 97640, 180634, 185516, 231895, 361268, 371032, 451585, 463790, 722536, 903170, 927580, 1716023, 1806340, 1855160, 3432046, 3612680, 6864092, 8580115, 13728184, 17160230, 34320460, 68640920]

約数ペア:

[(1, 68640920), (2, 34320460), (4, 17160230), (5, 13728184), (8, 8580115), (10, 6864092), (19, 3612680), (20, 3432046), (37, 1855160), (38, 1806340), (40, 1716023), (74, 927580), (76, 903170), (95, 722536), (148, 463790), (152, 451585), (185, 371032), (190, 361268), (296, 231895), (370, 185516), (380, 180634), (703, 97640), (740, 92758), (760, 90317), (1406, 48820), (1480, 46379), (2441, 28120), (2812, 24410), (3515, 19528), (4882, 14060), (5624, 12205), (7030, 9764)]