25809920

素因数分解:

$2^{10}\times 5^1\times {\mathrm{71}}^2$

素因数の和:167

約数の個数: 66

約数和(自身を含む): 62797866

約数和(自身を除く): 36987946

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 71, 80, 128, 142, 160, 256, 284, 320, 355, 512, 568, 640, 710, 1024, 1136, 1280, 1420, 2272, 2560, 2840, 4544, 5041, 5120, 5680, 9088, 10082, 11360, 18176, 20164, 22720, 25205, 36352, 40328, 45440, 50410, 72704, 80656, 90880, 100820, 161312, 181760, 201640, 322624, 363520, 403280, 645248, 806560, 1290496, 1613120, 2580992, 3226240, 5161984, 6452480, 12904960, 25809920]

約数ペア:

[(1, 25809920), (2, 12904960), (4, 6452480), (5, 5161984), (8, 3226240), (10, 2580992), (16, 1613120), (20, 1290496), (32, 806560), (40, 645248), (64, 403280), (71, 363520), (80, 322624), (128, 201640), (142, 181760), (160, 161312), (256, 100820), (284, 90880), (320, 80656), (355, 72704), (512, 50410), (568, 45440), (640, 40328), (710, 36352), (1024, 25205), (1136, 22720), (1280, 20164), (1420, 18176), (2272, 11360), (2560, 10082), (2840, 9088), (4544, 5680), (5041, 5120)]