20719134208

素因数分解:

$2^9\times {\mathrm{31}}^1\times {\mathrm{149}}^1\times {\mathrm{8761}}^1$

素因数の和:8959

約数の個数: 80

約数和(自身を含む): 43024924800

約数和(自身を除く): 22305790592

約数列:

[1, 2, 4, 8, 16, 31, 32, 62, 64, 124, 128, 149, 248, 256, 298, 496, 512, 596, 992, 1192, 1984, 2384, 3968, 4619, 4768, 7936, 8761, 9238, 9536, 15872, 17522, 18476, 19072, 35044, 36952, 38144, 70088, 73904, 76288, 140176, 147808, 271591, 280352, 295616, 543182, 560704, 591232, 1086364, 1121408, 1182464, 1305389, 2172728, 2242816, 2364928, 2610778, 4345456, 4485632, 5221556, 8690912, 10443112, 17381824, 20886224, 34763648, 40467059, 41772448, 69527296, 80934118, 83544896, 139054592, 161868236, 167089792, 323736472, 334179584, 647472944, 668359168, 1294945888, 2589891776, 5179783552, 10359567104, 20719134208]

約数ペア:

[(1, 20719134208), (2, 10359567104), (4, 5179783552), (8, 2589891776), (16, 1294945888), (31, 668359168), (32, 647472944), (62, 334179584), (64, 323736472), (124, 167089792), (128, 161868236), (149, 139054592), (248, 83544896), (256, 80934118), (298, 69527296), (496, 41772448), (512, 40467059), (596, 34763648), (992, 20886224), (1192, 17381824), (1984, 10443112), (2384, 8690912), (3968, 5221556), (4619, 4485632), (4768, 4345456), (7936, 2610778), (8761, 2364928), (9238, 2242816), (9536, 2172728), (15872, 1305389), (17522, 1182464), (18476, 1121408), (19072, 1086364), (35044, 591232), (36952, 560704), (38144, 543182), (70088, 295616), (73904, 280352), (76288, 271591), (140176, 147808)]