28400000

素因数分解:

$2^7\times 5^5\times {\mathrm{71}}^1$

素因数の和:110

約数の個数: 96

約数和(自身を含む): 71714160

約数和(自身を除く): 43314160

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 71, 80, 100, 125, 128, 142, 160, 200, 250, 284, 320, 355, 400, 500, 568, 625, 640, 710, 800, 1000, 1136, 1250, 1420, 1600, 1775, 2000, 2272, 2500, 2840, 3125, 3200, 3550, 4000, 4544, 5000, 5680, 6250, 7100, 8000, 8875, 9088, 10000, 11360, 12500, 14200, 16000, 17750, 20000, 22720, 25000, 28400, 35500, 40000, 44375, 45440, 50000, 56800, 71000, 80000, 88750, 100000, 113600, 142000, 177500, 200000, 221875, 227200, 284000, 355000, 400000, 443750, 568000, 710000, 887500, 1136000, 1420000, 1775000, 2840000, 3550000, 5680000, 7100000, 14200000, 28400000]

約数ペア:

[(1, 28400000), (2, 14200000), (4, 7100000), (5, 5680000), (8, 3550000), (10, 2840000), (16, 1775000), (20, 1420000), (25, 1136000), (32, 887500), (40, 710000), (50, 568000), (64, 443750), (71, 400000), (80, 355000), (100, 284000), (125, 227200), (128, 221875), (142, 200000), (160, 177500), (200, 142000), (250, 113600), (284, 100000), (320, 88750), (355, 80000), (400, 71000), (500, 56800), (568, 50000), (625, 45440), (640, 44375), (710, 40000), (800, 35500), (1000, 28400), (1136, 25000), (1250, 22720), (1420, 20000), (1600, 17750), (1775, 16000), (2000, 14200), (2272, 12500), (2500, 11360), (2840, 10000), (3125, 9088), (3200, 8875), (3550, 8000), (4000, 7100), (4544, 6250), (5000, 5680)]