86439980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{23}}^1\times {\mathrm{1553}}^1$

素因数の和:1607

約数の個数: 72

約数和(自身を含む): 208335456

約数和(自身を除く): 121895476

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 23, 44, 46, 55, 92, 110, 115, 121, 220, 230, 242, 253, 460, 484, 506, 605, 1012, 1210, 1265, 1553, 2420, 2530, 2783, 3106, 5060, 5566, 6212, 7765, 11132, 13915, 15530, 17083, 27830, 31060, 34166, 35719, 55660, 68332, 71438, 85415, 142876, 170830, 178595, 187913, 341660, 357190, 375826, 392909, 714380, 751652, 785818, 939565, 1571636, 1879130, 1964545, 3758260, 3929090, 4321999, 7858180, 8643998, 17287996, 21609995, 43219990, 86439980]

約数ペア:

[(1, 86439980), (2, 43219990), (4, 21609995), (5, 17287996), (10, 8643998), (11, 7858180), (20, 4321999), (22, 3929090), (23, 3758260), (44, 1964545), (46, 1879130), (55, 1571636), (92, 939565), (110, 785818), (115, 751652), (121, 714380), (220, 392909), (230, 375826), (242, 357190), (253, 341660), (460, 187913), (484, 178595), (506, 170830), (605, 142876), (1012, 85415), (1210, 71438), (1265, 68332), (1553, 55660), (2420, 35719), (2530, 34166), (2783, 31060), (3106, 27830), (5060, 17083), (5566, 15530), (6212, 13915), (7765, 11132)]