161806040

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^2\times {\mathrm{101}}^1\times {\mathrm{331}}^1$

素因数の和:465

約数の個数: 96

約数和(自身を含む): 405352080

約数和(自身を除く): 243546040

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 101, 110, 121, 202, 220, 242, 331, 404, 440, 484, 505, 605, 662, 808, 968, 1010, 1111, 1210, 1324, 1655, 2020, 2222, 2420, 2648, 3310, 3641, 4040, 4444, 4840, 5555, 6620, 7282, 8888, 11110, 12221, 13240, 14564, 18205, 22220, 24442, 29128, 33431, 36410, 40051, 44440, 48884, 61105, 66862, 72820, 80102, 97768, 122210, 133724, 145640, 160204, 167155, 200255, 244420, 267448, 320408, 334310, 367741, 400510, 488840, 668620, 735482, 801020, 1337240, 1470964, 1602040, 1838705, 2941928, 3677410, 4045151, 7354820, 8090302, 14709640, 16180604, 20225755, 32361208, 40451510, 80903020, 161806040]

約数ペア:

[(1, 161806040), (2, 80903020), (4, 40451510), (5, 32361208), (8, 20225755), (10, 16180604), (11, 14709640), (20, 8090302), (22, 7354820), (40, 4045151), (44, 3677410), (55, 2941928), (88, 1838705), (101, 1602040), (110, 1470964), (121, 1337240), (202, 801020), (220, 735482), (242, 668620), (331, 488840), (404, 400510), (440, 367741), (484, 334310), (505, 320408), (605, 267448), (662, 244420), (808, 200255), (968, 167155), (1010, 160204), (1111, 145640), (1210, 133724), (1324, 122210), (1655, 97768), (2020, 80102), (2222, 72820), (2420, 66862), (2648, 61105), (3310, 48884), (3641, 44440), (4040, 40051), (4444, 36410), (4840, 33431), (5555, 29128), (6620, 24442), (7282, 22220), (8888, 18205), (11110, 14564), (12221, 13240)]