128640720

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{41231}}^1$

素因数の和:41260

約数の個数: 80

約数和(自身を含む): 429472512

約数和(自身を除く): 300831792

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 20, 24, 26, 30, 39, 40, 48, 52, 60, 65, 78, 80, 104, 120, 130, 156, 195, 208, 240, 260, 312, 390, 520, 624, 780, 1040, 1560, 3120, 41231, 82462, 123693, 164924, 206155, 247386, 329848, 412310, 494772, 536003, 618465, 659696, 824620, 989544, 1072006, 1236930, 1608009, 1649240, 1979088, 2144012, 2473860, 2680015, 3216018, 3298480, 4288024, 4947720, 5360030, 6432036, 8040045, 8576048, 9895440, 10720060, 12864072, 16080090, 21440120, 25728144, 32160180, 42880240, 64320360, 128640720]

約数ペア:

[(1, 128640720), (2, 64320360), (3, 42880240), (4, 32160180), (5, 25728144), (6, 21440120), (8, 16080090), (10, 12864072), (12, 10720060), (13, 9895440), (15, 8576048), (16, 8040045), (20, 6432036), (24, 5360030), (26, 4947720), (30, 4288024), (39, 3298480), (40, 3216018), (48, 2680015), (52, 2473860), (60, 2144012), (65, 1979088), (78, 1649240), (80, 1608009), (104, 1236930), (120, 1072006), (130, 989544), (156, 824620), (195, 659696), (208, 618465), (240, 536003), (260, 494772), (312, 412310), (390, 329848), (520, 247386), (624, 206155), (780, 164924), (1040, 123693), (1560, 82462), (3120, 41231)]