28791994

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{163}}^1$

素因数の和:251

約数の個数: 64

約数和(自身を含む): 57434112

約数和(自身を除く): 28642118

約数列:

[1, 2, 7, 11, 14, 22, 31, 37, 62, 74, 77, 154, 163, 217, 259, 326, 341, 407, 434, 518, 682, 814, 1141, 1147, 1793, 2282, 2294, 2387, 2849, 3586, 4774, 5053, 5698, 6031, 8029, 10106, 12062, 12551, 12617, 16058, 25102, 25234, 35371, 42217, 55583, 66341, 70742, 84434, 88319, 111166, 132682, 176638, 186961, 373922, 389081, 464387, 778162, 928774, 1308727, 2056571, 2617454, 4113142, 14395997, 28791994]

約数ペア:

[(1, 28791994), (2, 14395997), (7, 4113142), (11, 2617454), (14, 2056571), (22, 1308727), (31, 928774), (37, 778162), (62, 464387), (74, 389081), (77, 373922), (154, 186961), (163, 176638), (217, 132682), (259, 111166), (326, 88319), (341, 84434), (407, 70742), (434, 66341), (518, 55583), (682, 42217), (814, 35371), (1141, 25234), (1147, 25102), (1793, 16058), (2282, 12617), (2294, 12551), (2387, 12062), (2849, 10106), (3586, 8029), (4774, 6031), (5053, 5698)]