20080320

素因数分解:

$2^6\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{1609}}^1$

素因数の和:1642

約数の個数: 112

約数和(自身を含む): 68701920

約数和(自身を除く): 48621600

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 20, 24, 26, 30, 32, 39, 40, 48, 52, 60, 64, 65, 78, 80, 96, 104, 120, 130, 156, 160, 192, 195, 208, 240, 260, 312, 320, 390, 416, 480, 520, 624, 780, 832, 960, 1040, 1248, 1560, 1609, 2080, 2496, 3120, 3218, 4160, 4827, 6240, 6436, 8045, 9654, 12480, 12872, 16090, 19308, 20917, 24135, 25744, 32180, 38616, 41834, 48270, 51488, 62751, 64360, 77232, 83668, 96540, 102976, 104585, 125502, 128720, 154464, 167336, 193080, 209170, 251004, 257440, 308928, 313755, 334672, 386160, 418340, 502008, 514880, 627510, 669344, 772320, 836680, 1004016, 1255020, 1338688, 1544640, 1673360, 2008032, 2510040, 3346720, 4016064, 5020080, 6693440, 10040160, 20080320]

約数ペア:

[(1, 20080320), (2, 10040160), (3, 6693440), (4, 5020080), (5, 4016064), (6, 3346720), (8, 2510040), (10, 2008032), (12, 1673360), (13, 1544640), (15, 1338688), (16, 1255020), (20, 1004016), (24, 836680), (26, 772320), (30, 669344), (32, 627510), (39, 514880), (40, 502008), (48, 418340), (52, 386160), (60, 334672), (64, 313755), (65, 308928), (78, 257440), (80, 251004), (96, 209170), (104, 193080), (120, 167336), (130, 154464), (156, 128720), (160, 125502), (192, 104585), (195, 102976), (208, 96540), (240, 83668), (260, 77232), (312, 64360), (320, 62751), (390, 51488), (416, 48270), (480, 41834), (520, 38616), (624, 32180), (780, 25744), (832, 24135), (960, 20917), (1040, 19308), (1248, 16090), (1560, 12872), (1609, 12480), (2080, 9654), (2496, 8045), (3120, 6436), (3218, 6240), (4160, 4827)]