81122080

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{907}}^1$

素因数の和:978

約数の個数: 96

約数和(自身を含む): 211425984

約数和(自身を除く): 130303904

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 43, 52, 65, 80, 86, 104, 130, 160, 172, 208, 215, 260, 344, 416, 430, 520, 559, 688, 860, 907, 1040, 1118, 1376, 1720, 1814, 2080, 2236, 2795, 3440, 3628, 4472, 4535, 5590, 6880, 7256, 8944, 9070, 11180, 11791, 14512, 17888, 18140, 22360, 23582, 29024, 36280, 39001, 44720, 47164, 58955, 72560, 78002, 89440, 94328, 117910, 145120, 156004, 188656, 195005, 235820, 312008, 377312, 390010, 471640, 507013, 624016, 780020, 943280, 1014026, 1248032, 1560040, 1886560, 2028052, 2535065, 3120080, 4056104, 5070130, 6240160, 8112208, 10140260, 16224416, 20280520, 40561040, 81122080]

約数ペア:

[(1, 81122080), (2, 40561040), (4, 20280520), (5, 16224416), (8, 10140260), (10, 8112208), (13, 6240160), (16, 5070130), (20, 4056104), (26, 3120080), (32, 2535065), (40, 2028052), (43, 1886560), (52, 1560040), (65, 1248032), (80, 1014026), (86, 943280), (104, 780020), (130, 624016), (160, 507013), (172, 471640), (208, 390010), (215, 377312), (260, 312008), (344, 235820), (416, 195005), (430, 188656), (520, 156004), (559, 145120), (688, 117910), (860, 94328), (907, 89440), (1040, 78002), (1118, 72560), (1376, 58955), (1720, 47164), (1814, 44720), (2080, 39001), (2236, 36280), (2795, 29024), (3440, 23582), (3628, 22360), (4472, 18140), (4535, 17888), (5590, 14512), (6880, 11791), (7256, 11180), (8944, 9070)]