4380720640

素因数分解:

$2^9\times 5^1\times {\mathrm{79}}^1\times {\mathrm{21661}}^1$

素因数の和:21763

約数の個数: 80

約数和(自身を含む): 10636908480

約数和(自身を除く): 6256187840

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 79, 80, 128, 158, 160, 256, 316, 320, 395, 512, 632, 640, 790, 1264, 1280, 1580, 2528, 2560, 3160, 5056, 6320, 10112, 12640, 20224, 21661, 25280, 40448, 43322, 50560, 86644, 101120, 108305, 173288, 202240, 216610, 346576, 433220, 693152, 866440, 1386304, 1711219, 1732880, 2772608, 3422438, 3465760, 5545216, 6844876, 6931520, 8556095, 11090432, 13689752, 13863040, 17112190, 27379504, 27726080, 34224380, 54759008, 55452160, 68448760, 109518016, 136897520, 219036032, 273795040, 438072064, 547590080, 876144128, 1095180160, 2190360320, 4380720640]

約数ペア:

[(1, 4380720640), (2, 2190360320), (4, 1095180160), (5, 876144128), (8, 547590080), (10, 438072064), (16, 273795040), (20, 219036032), (32, 136897520), (40, 109518016), (64, 68448760), (79, 55452160), (80, 54759008), (128, 34224380), (158, 27726080), (160, 27379504), (256, 17112190), (316, 13863040), (320, 13689752), (395, 11090432), (512, 8556095), (632, 6931520), (640, 6844876), (790, 5545216), (1264, 3465760), (1280, 3422438), (1580, 2772608), (2528, 1732880), (2560, 1711219), (3160, 1386304), (5056, 866440), (6320, 693152), (10112, 433220), (12640, 346576), (20224, 216610), (21661, 202240), (25280, 173288), (40448, 108305), (43322, 101120), (50560, 86644)]