87280000

素因数分解:

$2^7\times 5^4\times {\mathrm{1091}}^1$

素因数の和:1125

約数の個数: 80

約数和(自身を含む): 217477260

約数和(自身を除く): 130197260

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 125, 128, 160, 200, 250, 320, 400, 500, 625, 640, 800, 1000, 1091, 1250, 1600, 2000, 2182, 2500, 3200, 4000, 4364, 5000, 5455, 8000, 8728, 10000, 10910, 16000, 17456, 20000, 21820, 27275, 34912, 40000, 43640, 54550, 69824, 80000, 87280, 109100, 136375, 139648, 174560, 218200, 272750, 349120, 436400, 545500, 681875, 698240, 872800, 1091000, 1363750, 1745600, 2182000, 2727500, 3491200, 4364000, 5455000, 8728000, 10910000, 17456000, 21820000, 43640000, 87280000]

約数ペア:

[(1, 87280000), (2, 43640000), (4, 21820000), (5, 17456000), (8, 10910000), (10, 8728000), (16, 5455000), (20, 4364000), (25, 3491200), (32, 2727500), (40, 2182000), (50, 1745600), (64, 1363750), (80, 1091000), (100, 872800), (125, 698240), (128, 681875), (160, 545500), (200, 436400), (250, 349120), (320, 272750), (400, 218200), (500, 174560), (625, 139648), (640, 136375), (800, 109100), (1000, 87280), (1091, 80000), (1250, 69824), (1600, 54550), (2000, 43640), (2182, 40000), (2500, 34912), (3200, 27275), (4000, 21820), (4364, 20000), (5000, 17456), (5455, 16000), (8000, 10910), (8728, 10000)]