64271680

素因数分解:

$2^6\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^2$

素因数の和:109

約数の個数: 168

約数和(自身を含む): 181599840

約数和(自身を除く): 117328160

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 19, 20, 22, 31, 32, 38, 40, 44, 55, 62, 64, 76, 80, 88, 95, 110, 124, 152, 155, 160, 176, 190, 209, 220, 248, 304, 310, 320, 341, 352, 380, 418, 440, 496, 589, 608, 620, 682, 704, 760, 836, 880, 961, 992, 1045, 1178, 1216, 1240, 1364, 1520, 1672, 1705, 1760, 1922, 1984, 2090, 2356, 2480, 2728, 2945, 3040, 3344, 3410, 3520, 3844, 4180, 4712, 4805, 4960, 5456, 5890, 6080, 6479, 6688, 6820, 7688, 8360, 9424, 9610, 9920, 10571, 10912, 11780, 12958, 13376, 13640, 15376, 16720, 18259, 18848, 19220, 21142, 21824, 23560, 25916, 27280, 30752, 32395, 33440, 36518, 37696, 38440, 42284, 47120, 51832, 52855, 54560, 61504, 64790, 66880, 73036, 76880, 84568, 91295, 94240, 103664, 105710, 109120, 129580, 146072, 153760, 169136, 182590, 188480, 200849, 207328, 211420, 259160, 292144, 307520, 338272, 365180, 401698, 414656, 422840, 518320, 584288, 676544, 730360, 803396, 845680, 1004245, 1036640, 1168576, 1460720, 1606792, 1691360, 2008490, 2073280, 2921440, 3213584, 3382720, 4016980, 5842880, 6427168, 8033960, 12854336, 16067920, 32135840, 64271680]

約数ペア:

[(1, 64271680), (2, 32135840), (4, 16067920), (5, 12854336), (8, 8033960), (10, 6427168), (11, 5842880), (16, 4016980), (19, 3382720), (20, 3213584), (22, 2921440), (31, 2073280), (32, 2008490), (38, 1691360), (40, 1606792), (44, 1460720), (55, 1168576), (62, 1036640), (64, 1004245), (76, 845680), (80, 803396), (88, 730360), (95, 676544), (110, 584288), (124, 518320), (152, 422840), (155, 414656), (160, 401698), (176, 365180), (190, 338272), (209, 307520), (220, 292144), (248, 259160), (304, 211420), (310, 207328), (320, 200849), (341, 188480), (352, 182590), (380, 169136), (418, 153760), (440, 146072), (496, 129580), (589, 109120), (608, 105710), (620, 103664), (682, 94240), (704, 91295), (760, 84568), (836, 76880), (880, 73036), (961, 66880), (992, 64790), (1045, 61504), (1178, 54560), (1216, 52855), (1240, 51832), (1364, 47120), (1520, 42284), (1672, 38440), (1705, 37696), (1760, 36518), (1922, 33440), (1984, 32395), (2090, 30752), (2356, 27280), (2480, 25916), (2728, 23560), (2945, 21824), (3040, 21142), (3344, 19220), (3410, 18848), (3520, 18259), (3844, 16720), (4180, 15376), (4712, 13640), (4805, 13376), (4960, 12958), (5456, 11780), (5890, 10912), (6080, 10571), (6479, 9920), (6688, 9610), (6820, 9424), (7688, 8360)]