80128000

素因数分解:

$2^{11}\times 5^3\times {\mathrm{313}}^1$

素因数の和:350

約数の個数: 96

約数和(自身を含む): 200589480

約数和(自身を除く): 120461480

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 125, 128, 160, 200, 250, 256, 313, 320, 400, 500, 512, 626, 640, 800, 1000, 1024, 1252, 1280, 1565, 1600, 2000, 2048, 2504, 2560, 3130, 3200, 4000, 5008, 5120, 6260, 6400, 7825, 8000, 10016, 10240, 12520, 12800, 15650, 16000, 20032, 25040, 25600, 31300, 32000, 39125, 40064, 50080, 51200, 62600, 64000, 78250, 80128, 100160, 125200, 128000, 156500, 160256, 200320, 250400, 256000, 313000, 320512, 400640, 500800, 626000, 641024, 801280, 1001600, 1252000, 1602560, 2003200, 2504000, 3205120, 4006400, 5008000, 8012800, 10016000, 16025600, 20032000, 40064000, 80128000]

約数ペア:

[(1, 80128000), (2, 40064000), (4, 20032000), (5, 16025600), (8, 10016000), (10, 8012800), (16, 5008000), (20, 4006400), (25, 3205120), (32, 2504000), (40, 2003200), (50, 1602560), (64, 1252000), (80, 1001600), (100, 801280), (125, 641024), (128, 626000), (160, 500800), (200, 400640), (250, 320512), (256, 313000), (313, 256000), (320, 250400), (400, 200320), (500, 160256), (512, 156500), (626, 128000), (640, 125200), (800, 100160), (1000, 80128), (1024, 78250), (1252, 64000), (1280, 62600), (1565, 51200), (1600, 50080), (2000, 40064), (2048, 39125), (2504, 32000), (2560, 31300), (3130, 25600), (3200, 25040), (4000, 20032), (5008, 16000), (5120, 15650), (6260, 12800), (6400, 12520), (7825, 10240), (8000, 10016)]