20440000

素因数分解:

$2^6\times 5^4\times 7^1\times {\mathrm{73}}^1$

素因数の和:112

約数の個数: 140

約数和(自身を含む): 58718704

約数和(自身を除く): 38278704

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 25, 28, 32, 35, 40, 50, 56, 64, 70, 73, 80, 100, 112, 125, 140, 146, 160, 175, 200, 224, 250, 280, 292, 320, 350, 365, 400, 448, 500, 511, 560, 584, 625, 700, 730, 800, 875, 1000, 1022, 1120, 1168, 1250, 1400, 1460, 1600, 1750, 1825, 2000, 2044, 2240, 2336, 2500, 2555, 2800, 2920, 3500, 3650, 4000, 4088, 4375, 4672, 5000, 5110, 5600, 5840, 7000, 7300, 8000, 8176, 8750, 9125, 10000, 10220, 11200, 11680, 12775, 14000, 14600, 16352, 17500, 18250, 20000, 20440, 23360, 25550, 28000, 29200, 32704, 35000, 36500, 40000, 40880, 45625, 51100, 56000, 58400, 63875, 70000, 73000, 81760, 91250, 102200, 116800, 127750, 140000, 146000, 163520, 182500, 204400, 255500, 280000, 292000, 319375, 365000, 408800, 511000, 584000, 638750, 730000, 817600, 1022000, 1277500, 1460000, 2044000, 2555000, 2920000, 4088000, 5110000, 10220000, 20440000]

約数ペア:

[(1, 20440000), (2, 10220000), (4, 5110000), (5, 4088000), (7, 2920000), (8, 2555000), (10, 2044000), (14, 1460000), (16, 1277500), (20, 1022000), (25, 817600), (28, 730000), (32, 638750), (35, 584000), (40, 511000), (50, 408800), (56, 365000), (64, 319375), (70, 292000), (73, 280000), (80, 255500), (100, 204400), (112, 182500), (125, 163520), (140, 146000), (146, 140000), (160, 127750), (175, 116800), (200, 102200), (224, 91250), (250, 81760), (280, 73000), (292, 70000), (320, 63875), (350, 58400), (365, 56000), (400, 51100), (448, 45625), (500, 40880), (511, 40000), (560, 36500), (584, 35000), (625, 32704), (700, 29200), (730, 28000), (800, 25550), (875, 23360), (1000, 20440), (1022, 20000), (1120, 18250), (1168, 17500), (1250, 16352), (1400, 14600), (1460, 14000), (1600, 12775), (1750, 11680), (1825, 11200), (2000, 10220), (2044, 10000), (2240, 9125), (2336, 8750), (2500, 8176), (2555, 8000), (2800, 7300), (2920, 7000), (3500, 5840), (3650, 5600), (4000, 5110), (4088, 5000), (4375, 4672)]