217309880

素因数分解:

$2^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{359}}^1\times {\mathrm{409}}^1$

素因数の和:816

約数の個数: 64

約数和(自身を含む): 504792000

約数和(自身を除く): 287482120

約数列:

[1, 2, 4, 5, 8, 10, 20, 37, 40, 74, 148, 185, 296, 359, 370, 409, 718, 740, 818, 1436, 1480, 1636, 1795, 2045, 2872, 3272, 3590, 4090, 7180, 8180, 13283, 14360, 15133, 16360, 26566, 30266, 53132, 60532, 66415, 75665, 106264, 121064, 132830, 146831, 151330, 265660, 293662, 302660, 531320, 587324, 605320, 734155, 1174648, 1468310, 2936620, 5432747, 5873240, 10865494, 21730988, 27163735, 43461976, 54327470, 108654940, 217309880]

約数ペア:

[(1, 217309880), (2, 108654940), (4, 54327470), (5, 43461976), (8, 27163735), (10, 21730988), (20, 10865494), (37, 5873240), (40, 5432747), (74, 2936620), (148, 1468310), (185, 1174648), (296, 734155), (359, 605320), (370, 587324), (409, 531320), (718, 302660), (740, 293662), (818, 265660), (1436, 151330), (1480, 146831), (1636, 132830), (1795, 121064), (2045, 106264), (2872, 75665), (3272, 66415), (3590, 60532), (4090, 53132), (7180, 30266), (8180, 26566), (13283, 16360), (14360, 15133)]