380400640

素因数分解:

$2^{10}\times 5^1\times {\mathrm{74297}}^1$

素因数の和:74322

約数の個数: 44

約数和(自身を含む): 912528036

約数和(自身を除く): 532127396

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 512, 640, 1024, 1280, 2560, 5120, 74297, 148594, 297188, 371485, 594376, 742970, 1188752, 1485940, 2377504, 2971880, 4755008, 5943760, 9510016, 11887520, 19020032, 23775040, 38040064, 47550080, 76080128, 95100160, 190200320, 380400640]

約数ペア:

[(1, 380400640), (2, 190200320), (4, 95100160), (5, 76080128), (8, 47550080), (10, 38040064), (16, 23775040), (20, 19020032), (32, 11887520), (40, 9510016), (64, 5943760), (80, 4755008), (128, 2971880), (160, 2377504), (256, 1485940), (320, 1188752), (512, 742970), (640, 594376), (1024, 371485), (1280, 297188), (2560, 148594), (5120, 74297)]