84721760

素因数分解:

$2^5\times 5^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{31}}^2$

素因数の和:125

約数の個数: 144

約数和(自身を含む): 225212400

約数和(自身を除く): 140490640

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 29, 31, 32, 38, 40, 58, 62, 76, 80, 95, 116, 124, 145, 152, 155, 160, 190, 232, 248, 290, 304, 310, 380, 464, 496, 551, 580, 589, 608, 620, 760, 899, 928, 961, 992, 1102, 1160, 1178, 1240, 1520, 1798, 1922, 2204, 2320, 2356, 2480, 2755, 2945, 3040, 3596, 3844, 4408, 4495, 4640, 4712, 4805, 4960, 5510, 5890, 7192, 7688, 8816, 8990, 9424, 9610, 11020, 11780, 14384, 15376, 17081, 17632, 17980, 18259, 18848, 19220, 22040, 23560, 27869, 28768, 30752, 34162, 35960, 36518, 38440, 44080, 47120, 55738, 68324, 71920, 73036, 76880, 85405, 88160, 91295, 94240, 111476, 136648, 139345, 143840, 146072, 153760, 170810, 182590, 222952, 273296, 278690, 292144, 341620, 365180, 445904, 529511, 546592, 557380, 584288, 683240, 730360, 891808, 1059022, 1114760, 1366480, 1460720, 2118044, 2229520, 2647555, 2732960, 2921440, 4236088, 4459040, 5295110, 8472176, 10590220, 16944352, 21180440, 42360880, 84721760]

約数ペア:

[(1, 84721760), (2, 42360880), (4, 21180440), (5, 16944352), (8, 10590220), (10, 8472176), (16, 5295110), (19, 4459040), (20, 4236088), (29, 2921440), (31, 2732960), (32, 2647555), (38, 2229520), (40, 2118044), (58, 1460720), (62, 1366480), (76, 1114760), (80, 1059022), (95, 891808), (116, 730360), (124, 683240), (145, 584288), (152, 557380), (155, 546592), (160, 529511), (190, 445904), (232, 365180), (248, 341620), (290, 292144), (304, 278690), (310, 273296), (380, 222952), (464, 182590), (496, 170810), (551, 153760), (580, 146072), (589, 143840), (608, 139345), (620, 136648), (760, 111476), (899, 94240), (928, 91295), (961, 88160), (992, 85405), (1102, 76880), (1160, 73036), (1178, 71920), (1240, 68324), (1520, 55738), (1798, 47120), (1922, 44080), (2204, 38440), (2320, 36518), (2356, 35960), (2480, 34162), (2755, 30752), (2945, 28768), (3040, 27869), (3596, 23560), (3844, 22040), (4408, 19220), (4495, 18848), (4640, 18259), (4712, 17980), (4805, 17632), (4960, 17081), (5510, 15376), (5890, 14384), (7192, 11780), (7688, 11020), (8816, 9610), (8990, 9424)]