78510520

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{109}}^1\times {\mathrm{1637}}^1$

素因数の和:1768

約数の個数: 64

約数和(自身を含む): 194594400

約数和(自身を除く): 116083880

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 109, 110, 218, 220, 436, 440, 545, 872, 1090, 1199, 1637, 2180, 2398, 3274, 4360, 4796, 5995, 6548, 8185, 9592, 11990, 13096, 16370, 18007, 23980, 32740, 36014, 47960, 65480, 72028, 90035, 144056, 178433, 180070, 356866, 360140, 713732, 720280, 892165, 1427464, 1784330, 1962763, 3568660, 3925526, 7137320, 7851052, 9813815, 15702104, 19627630, 39255260, 78510520]

約数ペア:

[(1, 78510520), (2, 39255260), (4, 19627630), (5, 15702104), (8, 9813815), (10, 7851052), (11, 7137320), (20, 3925526), (22, 3568660), (40, 1962763), (44, 1784330), (55, 1427464), (88, 892165), (109, 720280), (110, 713732), (218, 360140), (220, 356866), (436, 180070), (440, 178433), (545, 144056), (872, 90035), (1090, 72028), (1199, 65480), (1637, 47960), (2180, 36014), (2398, 32740), (3274, 23980), (4360, 18007), (4796, 16370), (5995, 13096), (6548, 11990), (8185, 9592)]