128688640

素因数分解:

$2^9\times 5^1\times {\mathrm{17}}^1\times {\mathrm{2957}}^1$

素因数の和:2997

約数の個数: 80

約数和(自身を含む): 326811672

約数和(自身を除く): 198123032

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 32, 34, 40, 64, 68, 80, 85, 128, 136, 160, 170, 256, 272, 320, 340, 512, 544, 640, 680, 1088, 1280, 1360, 2176, 2560, 2720, 2957, 4352, 5440, 5914, 8704, 10880, 11828, 14785, 21760, 23656, 29570, 43520, 47312, 50269, 59140, 94624, 100538, 118280, 189248, 201076, 236560, 251345, 378496, 402152, 473120, 502690, 756992, 804304, 946240, 1005380, 1513984, 1608608, 1892480, 2010760, 3217216, 3784960, 4021520, 6434432, 7569920, 8043040, 12868864, 16086080, 25737728, 32172160, 64344320, 128688640]

約数ペア:

[(1, 128688640), (2, 64344320), (4, 32172160), (5, 25737728), (8, 16086080), (10, 12868864), (16, 8043040), (17, 7569920), (20, 6434432), (32, 4021520), (34, 3784960), (40, 3217216), (64, 2010760), (68, 1892480), (80, 1608608), (85, 1513984), (128, 1005380), (136, 946240), (160, 804304), (170, 756992), (256, 502690), (272, 473120), (320, 402152), (340, 378496), (512, 251345), (544, 236560), (640, 201076), (680, 189248), (1088, 118280), (1280, 100538), (1360, 94624), (2176, 59140), (2560, 50269), (2720, 47312), (2957, 43520), (4352, 29570), (5440, 23656), (5914, 21760), (8704, 14785), (10880, 11828)]