65424640

素因数分解:

$2^8\times 5^1\times {\mathrm{79}}^1\times {\mathrm{647}}^1$

素因数の和:747

約数の個数: 72

約数和(自身を含む): 158941440

約数和(自身を除く): 93516800

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 79, 80, 128, 158, 160, 256, 316, 320, 395, 632, 640, 647, 790, 1264, 1280, 1294, 1580, 2528, 2588, 3160, 3235, 5056, 5176, 6320, 6470, 10112, 10352, 12640, 12940, 20224, 20704, 25280, 25880, 41408, 50560, 51113, 51760, 82816, 101120, 102226, 103520, 165632, 204452, 207040, 255565, 408904, 414080, 511130, 817808, 828160, 1022260, 1635616, 2044520, 3271232, 4089040, 6542464, 8178080, 13084928, 16356160, 32712320, 65424640]

約数ペア:

[(1, 65424640), (2, 32712320), (4, 16356160), (5, 13084928), (8, 8178080), (10, 6542464), (16, 4089040), (20, 3271232), (32, 2044520), (40, 1635616), (64, 1022260), (79, 828160), (80, 817808), (128, 511130), (158, 414080), (160, 408904), (256, 255565), (316, 207040), (320, 204452), (395, 165632), (632, 103520), (640, 102226), (647, 101120), (790, 82816), (1264, 51760), (1280, 51113), (1294, 50560), (1580, 41408), (2528, 25880), (2588, 25280), (3160, 20704), (3235, 20224), (5056, 12940), (5176, 12640), (6320, 10352), (6470, 10112)]