81142996

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^2\times {\mathrm{101}}^1$

素因数の和:197

約数の個数: 72

約数和(自身を含む): 170160480

約数和(自身を除く): 89017484

約数列:

[1, 2, 4, 11, 19, 22, 31, 38, 44, 62, 76, 101, 124, 202, 209, 341, 404, 418, 589, 682, 836, 961, 1111, 1178, 1364, 1919, 1922, 2222, 2356, 3131, 3838, 3844, 4444, 6262, 6479, 7676, 10571, 12524, 12958, 18259, 21109, 21142, 25916, 34441, 36518, 42218, 42284, 59489, 68882, 73036, 84436, 97061, 118978, 137764, 194122, 200849, 237956, 388244, 401698, 654379, 803396, 1067671, 1308758, 1844159, 2135342, 2617516, 3688318, 4270684, 7376636, 20285749, 40571498, 81142996]

約数ペア:

[(1, 81142996), (2, 40571498), (4, 20285749), (11, 7376636), (19, 4270684), (22, 3688318), (31, 2617516), (38, 2135342), (44, 1844159), (62, 1308758), (76, 1067671), (101, 803396), (124, 654379), (202, 401698), (209, 388244), (341, 237956), (404, 200849), (418, 194122), (589, 137764), (682, 118978), (836, 97061), (961, 84436), (1111, 73036), (1178, 68882), (1364, 59489), (1919, 42284), (1922, 42218), (2222, 36518), (2356, 34441), (3131, 25916), (3838, 21142), (3844, 21109), (4444, 18259), (6262, 12958), (6479, 12524), (7676, 10571)]