81520000

素因数分解:

$2^7\times 5^4\times {\mathrm{1019}}^1$

素因数の和:1053

約数の個数: 80

約数和(自身を含む): 203138100

約数和(自身を除く): 121618100

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, 1019, 1250, 1600, 2000, 2038, 2500, 3200, 4000, 4076, 5000, 5095, 8000, 8152, 10000, 10190, 16000, 16304, 20000, 20380, 25475, 32608, 40000, 40760, 50950, 65216, 80000, 81520, 101900, 127375, 130432, 163040, 203800, 254750, 326080, 407600, 509500, 636875, 652160, 815200, 1019000, 1273750, 1630400, 2038000, 2547500, 3260800, 4076000, 5095000, 8152000, 10190000, 16304000, 20380000, 40760000, 81520000]

約数ペア:

[(1, 81520000), (2, 40760000), (4, 20380000), (5, 16304000), (8, 10190000), (10, 8152000), (16, 5095000), (20, 4076000), (25, 3260800), (32, 2547500), (40, 2038000), (50, 1630400), (64, 1273750), (80, 1019000), (100, 815200), (125, 652160), (128, 636875), (160, 509500), (200, 407600), (250, 326080), (320, 254750), (400, 203800), (500, 163040), (625, 130432), (640, 127375), (800, 101900), (1000, 81520), (1019, 80000), (1250, 65216), (1600, 50950), (2000, 40760), (2038, 40000), (2500, 32608), (3200, 25475), (4000, 20380), (4076, 20000), (5000, 16304), (5095, 16000), (8000, 10190), (8152, 10000)]