20470400000

素因数分解:

$2^{10}\times 5^5\times {\mathrm{6397}}^1$

素因数の和:6442

約数の個数: 132

約数和(自身を含む): 51155733636

約数和(自身を除く): 30685333636

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 125, 128, 160, 200, 250, 256, 320, 400, 500, 512, 625, 640, 800, 1000, 1024, 1250, 1280, 1600, 2000, 2500, 2560, 3125, 3200, 4000, 5000, 5120, 6250, 6397, 6400, 8000, 10000, 12500, 12794, 12800, 16000, 20000, 25000, 25588, 25600, 31985, 32000, 40000, 50000, 51176, 63970, 64000, 80000, 100000, 102352, 127940, 128000, 159925, 160000, 200000, 204704, 255880, 319850, 320000, 400000, 409408, 511760, 639700, 640000, 799625, 800000, 818816, 1023520, 1279400, 1599250, 1600000, 1637632, 2047040, 2558800, 3198500, 3200000, 3275264, 3998125, 4094080, 5117600, 6397000, 6550528, 7996250, 8188160, 10235200, 12794000, 15992500, 16376320, 19990625, 20470400, 25588000, 31985000, 32752640, 39981250, 40940800, 51176000, 63970000, 79962500, 81881600, 102352000, 127940000, 159925000, 163763200, 204704000, 255880000, 319850000, 409408000, 511760000, 639700000, 818816000, 1023520000, 1279400000, 2047040000, 2558800000, 4094080000, 5117600000, 10235200000, 20470400000]

約数ペア:

[(1, 20470400000), (2, 10235200000), (4, 5117600000), (5, 4094080000), (8, 2558800000), (10, 2047040000), (16, 1279400000), (20, 1023520000), (25, 818816000), (32, 639700000), (40, 511760000), (50, 409408000), (64, 319850000), (80, 255880000), (100, 204704000), (125, 163763200), (128, 159925000), (160, 127940000), (200, 102352000), (250, 81881600), (256, 79962500), (320, 63970000), (400, 51176000), (500, 40940800), (512, 39981250), (625, 32752640), (640, 31985000), (800, 25588000), (1000, 20470400), (1024, 19990625), (1250, 16376320), (1280, 15992500), (1600, 12794000), (2000, 10235200), (2500, 8188160), (2560, 7996250), (3125, 6550528), (3200, 6397000), (4000, 5117600), (5000, 4094080), (5120, 3998125), (6250, 3275264), (6397, 3200000), (6400, 3198500), (8000, 2558800), (10000, 2047040), (12500, 1637632), (12794, 1600000), (12800, 1599250), (16000, 1279400), (20000, 1023520), (25000, 818816), (25588, 800000), (25600, 799625), (31985, 640000), (32000, 639700), (40000, 511760), (50000, 409408), (51176, 400000), (63970, 320000), (64000, 319850), (80000, 255880), (100000, 204704), (102352, 200000), (127940, 160000), (128000, 159925)]