20790400

素因数分解:

$2^7\times 5^2\times {\mathrm{73}}^1\times {\mathrm{89}}^1$

素因数の和:186

約数の個数: 96

約数和(自身を含む): 52647300

約数和(自身を除く): 31856900

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 73, 80, 89, 100, 128, 146, 160, 178, 200, 292, 320, 356, 365, 400, 445, 584, 640, 712, 730, 800, 890, 1168, 1424, 1460, 1600, 1780, 1825, 2225, 2336, 2848, 2920, 3200, 3560, 3650, 4450, 4672, 5696, 5840, 6497, 7120, 7300, 8900, 9344, 11392, 11680, 12994, 14240, 14600, 17800, 23360, 25988, 28480, 29200, 32485, 35600, 46720, 51976, 56960, 58400, 64970, 71200, 103952, 116800, 129940, 142400, 162425, 207904, 233600, 259880, 284800, 324850, 415808, 519760, 649700, 831616, 1039520, 1299400, 2079040, 2598800, 4158080, 5197600, 10395200, 20790400]

約数ペア:

[(1, 20790400), (2, 10395200), (4, 5197600), (5, 4158080), (8, 2598800), (10, 2079040), (16, 1299400), (20, 1039520), (25, 831616), (32, 649700), (40, 519760), (50, 415808), (64, 324850), (73, 284800), (80, 259880), (89, 233600), (100, 207904), (128, 162425), (146, 142400), (160, 129940), (178, 116800), (200, 103952), (292, 71200), (320, 64970), (356, 58400), (365, 56960), (400, 51976), (445, 46720), (584, 35600), (640, 32485), (712, 29200), (730, 28480), (800, 25988), (890, 23360), (1168, 17800), (1424, 14600), (1460, 14240), (1600, 12994), (1780, 11680), (1825, 11392), (2225, 9344), (2336, 8900), (2848, 7300), (2920, 7120), (3200, 6497), (3560, 5840), (3650, 5696), (4450, 4672)]