801280

素因数分解:

$2^9\times 5^1\times {\mathrm{313}}^1$

素因数の和:336

約数の個数: 40

約数和(自身を含む): 1927332

約数和(自身を除く): 1126052

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 313, 320, 512, 626, 640, 1252, 1280, 1565, 2504, 2560, 3130, 5008, 6260, 10016, 12520, 20032, 25040, 40064, 50080, 80128, 100160, 160256, 200320, 400640, 801280]

約数ペア:

[(1, 801280), (2, 400640), (4, 200320), (5, 160256), (8, 100160), (10, 80128), (16, 50080), (20, 40064), (32, 25040), (40, 20032), (64, 12520), (80, 10016), (128, 6260), (160, 5008), (256, 3130), (313, 2560), (320, 2504), (512, 1565), (626, 1280), (640, 1252)]