81312590

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{23}}^2\times {\mathrm{809}}^1$

素因数の和:881

約数の個数: 48

約数和(自身を含む): 161254800

約数和(自身を除く): 79942210

約数列:

[1, 2, 5, 10, 19, 23, 38, 46, 95, 115, 190, 230, 437, 529, 809, 874, 1058, 1618, 2185, 2645, 4045, 4370, 5290, 8090, 10051, 15371, 18607, 20102, 30742, 37214, 50255, 76855, 93035, 100510, 153710, 186070, 353533, 427961, 707066, 855922, 1767665, 2139805, 3535330, 4279610, 8131259, 16262518, 40656295, 81312590]

約数ペア:

[(1, 81312590), (2, 40656295), (5, 16262518), (10, 8131259), (19, 4279610), (23, 3535330), (38, 2139805), (46, 1767665), (95, 855922), (115, 707066), (190, 427961), (230, 353533), (437, 186070), (529, 153710), (809, 100510), (874, 93035), (1058, 76855), (1618, 50255), (2185, 37214), (2645, 30742), (4045, 20102), (4370, 18607), (5290, 15371), (8090, 10051)]