77821780

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^2\times {\mathrm{4049}}^1$

素因数の和:4120

約数の個数: 36

約数和(自身を含む): 168909300

約数和(自身を除く): 91087520

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 961, 1922, 3844, 4049, 4805, 8098, 9610, 16196, 19220, 20245, 40490, 80980, 125519, 251038, 502076, 627595, 1255190, 2510380, 3891089, 7782178, 15564356, 19455445, 38910890, 77821780]

約数ペア:

[(1, 77821780), (2, 38910890), (4, 19455445), (5, 15564356), (10, 7782178), (20, 3891089), (31, 2510380), (62, 1255190), (124, 627595), (155, 502076), (310, 251038), (620, 125519), (961, 80980), (1922, 40490), (3844, 20245), (4049, 19220), (4805, 16196), (8098, 9610)]