81761568

素因数分解:

$2^5\times 3^1\times 7^1\times {\mathrm{17}}^2\times {\mathrm{421}}^1$

素因数の和:475

約数の個数: 144

約数和(自身を含む): 261180864

約数和(自身を除く): 179419296

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 16, 17, 21, 24, 28, 32, 34, 42, 48, 51, 56, 68, 84, 96, 102, 112, 119, 136, 168, 204, 224, 238, 272, 289, 336, 357, 408, 421, 476, 544, 578, 672, 714, 816, 842, 867, 952, 1156, 1263, 1428, 1632, 1684, 1734, 1904, 2023, 2312, 2526, 2856, 2947, 3368, 3468, 3808, 4046, 4624, 5052, 5712, 5894, 6069, 6736, 6936, 7157, 8092, 8841, 9248, 10104, 11424, 11788, 12138, 13472, 13872, 14314, 16184, 17682, 20208, 21471, 23576, 24276, 27744, 28628, 32368, 35364, 40416, 42942, 47152, 48552, 50099, 57256, 64736, 70728, 85884, 94304, 97104, 100198, 114512, 121669, 141456, 150297, 171768, 194208, 200396, 229024, 243338, 282912, 300594, 343536, 365007, 400792, 486676, 601188, 687072, 730014, 801584, 851683, 973352, 1202376, 1460028, 1603168, 1703366, 1946704, 2404752, 2555049, 2920056, 3406732, 3893408, 4809504, 5110098, 5840112, 6813464, 10220196, 11680224, 13626928, 20440392, 27253856, 40880784, 81761568]

約数ペア:

[(1, 81761568), (2, 40880784), (3, 27253856), (4, 20440392), (6, 13626928), (7, 11680224), (8, 10220196), (12, 6813464), (14, 5840112), (16, 5110098), (17, 4809504), (21, 3893408), (24, 3406732), (28, 2920056), (32, 2555049), (34, 2404752), (42, 1946704), (48, 1703366), (51, 1603168), (56, 1460028), (68, 1202376), (84, 973352), (96, 851683), (102, 801584), (112, 730014), (119, 687072), (136, 601188), (168, 486676), (204, 400792), (224, 365007), (238, 343536), (272, 300594), (289, 282912), (336, 243338), (357, 229024), (408, 200396), (421, 194208), (476, 171768), (544, 150297), (578, 141456), (672, 121669), (714, 114512), (816, 100198), (842, 97104), (867, 94304), (952, 85884), (1156, 70728), (1263, 64736), (1428, 57256), (1632, 50099), (1684, 48552), (1734, 47152), (1904, 42942), (2023, 40416), (2312, 35364), (2526, 32368), (2856, 28628), (2947, 27744), (3368, 24276), (3468, 23576), (3808, 21471), (4046, 20208), (4624, 17682), (5052, 16184), (5712, 14314), (5894, 13872), (6069, 13472), (6736, 12138), (6936, 11788), (7157, 11424), (8092, 10104), (8841, 9248)]