81028885

素因数分解:

$5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{191}}^1$

素因数の和:274

約数の個数: 64

約数和(自身を含む): 127401984

約数和(自身を除く): 46373099

約数列:

[1, 5, 7, 17, 23, 31, 35, 85, 115, 119, 155, 161, 191, 217, 391, 527, 595, 713, 805, 955, 1085, 1337, 1955, 2635, 2737, 3247, 3565, 3689, 4393, 4991, 5921, 6685, 12121, 13685, 16235, 18445, 21965, 22729, 24955, 29605, 30751, 41447, 60605, 74681, 84847, 100657, 113645, 136183, 153755, 207235, 373405, 424235, 503285, 522767, 680915, 704599, 953281, 2315111, 2613835, 3522995, 4766405, 11575555, 16205777, 81028885]

約数ペア:

[(1, 81028885), (5, 16205777), (7, 11575555), (17, 4766405), (23, 3522995), (31, 2613835), (35, 2315111), (85, 953281), (115, 704599), (119, 680915), (155, 522767), (161, 503285), (191, 424235), (217, 373405), (391, 207235), (527, 153755), (595, 136183), (713, 113645), (805, 100657), (955, 84847), (1085, 74681), (1337, 60605), (1955, 41447), (2635, 30751), (2737, 29605), (3247, 24955), (3565, 22729), (3689, 21965), (4393, 18445), (4991, 16235), (5921, 13685), (6685, 12121)]