290785220

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{139}}^1\times {\mathrm{257}}^1$

素因数の和:453

約数の個数: 96

約数和(自身を含む): 691770240

約数和(自身を除く): 400985020

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 37, 44, 55, 74, 110, 139, 148, 185, 220, 257, 278, 370, 407, 514, 556, 695, 740, 814, 1028, 1285, 1390, 1529, 1628, 2035, 2570, 2780, 2827, 3058, 4070, 5140, 5143, 5654, 6116, 7645, 8140, 9509, 10286, 11308, 14135, 15290, 19018, 20572, 25715, 28270, 30580, 35723, 38036, 47545, 51430, 56540, 56573, 71446, 95090, 102860, 104599, 113146, 142892, 178615, 190180, 209198, 226292, 282865, 357230, 392953, 418396, 522995, 565730, 714460, 785906, 1045990, 1131460, 1321751, 1571812, 1964765, 2091980, 2643502, 3929530, 5287004, 6608755, 7859060, 13217510, 14539261, 26435020, 29078522, 58157044, 72696305, 145392610, 290785220]

約数ペア:

[(1, 290785220), (2, 145392610), (4, 72696305), (5, 58157044), (10, 29078522), (11, 26435020), (20, 14539261), (22, 13217510), (37, 7859060), (44, 6608755), (55, 5287004), (74, 3929530), (110, 2643502), (139, 2091980), (148, 1964765), (185, 1571812), (220, 1321751), (257, 1131460), (278, 1045990), (370, 785906), (407, 714460), (514, 565730), (556, 522995), (695, 418396), (740, 392953), (814, 357230), (1028, 282865), (1285, 226292), (1390, 209198), (1529, 190180), (1628, 178615), (2035, 142892), (2570, 113146), (2780, 104599), (2827, 102860), (3058, 95090), (4070, 71446), (5140, 56573), (5143, 56540), (5654, 51430), (6116, 47545), (7645, 38036), (8140, 35723), (9509, 30580), (10286, 28270), (11308, 25715), (14135, 20572), (15290, 19018)]