4006400

素因数分解:

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

素因数の和:341

約数の個数: 60

約数和(自身を含む): 9957882

約数和(自身を除く): 5951482

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 128, 160, 200, 256, 313, 320, 400, 512, 626, 640, 800, 1252, 1280, 1565, 1600, 2504, 2560, 3130, 3200, 5008, 6260, 6400, 7825, 10016, 12520, 12800, 15650, 20032, 25040, 31300, 40064, 50080, 62600, 80128, 100160, 125200, 160256, 200320, 250400, 400640, 500800, 801280, 1001600, 2003200, 4006400]

約数ペア:

[(1, 4006400), (2, 2003200), (4, 1001600), (5, 801280), (8, 500800), (10, 400640), (16, 250400), (20, 200320), (25, 160256), (32, 125200), (40, 100160), (50, 80128), (64, 62600), (80, 50080), (100, 40064), (128, 31300), (160, 25040), (200, 20032), (256, 15650), (313, 12800), (320, 12520), (400, 10016), (512, 7825), (626, 6400), (640, 6260), (800, 5008), (1252, 3200), (1280, 3130), (1565, 2560), (1600, 2504)]