178321520

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{277}}^1\times {\mathrm{619}}^1$

素因数の和:922

約数の個数: 80

約数和(自身を含む): 448825440

約数和(自身を除く): 270503920

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 277, 520, 554, 619, 1040, 1108, 1238, 1385, 2216, 2476, 2770, 3095, 3601, 4432, 4952, 5540, 6190, 7202, 8047, 9904, 11080, 12380, 14404, 16094, 18005, 22160, 24760, 28808, 32188, 36010, 40235, 49520, 57616, 64376, 72020, 80470, 128752, 144040, 160940, 171463, 288080, 321880, 342926, 643760, 685852, 857315, 1371704, 1714630, 2229019, 2743408, 3429260, 4458038, 6858520, 8916076, 11145095, 13717040, 17832152, 22290190, 35664304, 44580380, 89160760, 178321520]

約数ペア:

[(1, 178321520), (2, 89160760), (4, 44580380), (5, 35664304), (8, 22290190), (10, 17832152), (13, 13717040), (16, 11145095), (20, 8916076), (26, 6858520), (40, 4458038), (52, 3429260), (65, 2743408), (80, 2229019), (104, 1714630), (130, 1371704), (208, 857315), (260, 685852), (277, 643760), (520, 342926), (554, 321880), (619, 288080), (1040, 171463), (1108, 160940), (1238, 144040), (1385, 128752), (2216, 80470), (2476, 72020), (2770, 64376), (3095, 57616), (3601, 49520), (4432, 40235), (4952, 36010), (5540, 32188), (6190, 28808), (7202, 24760), (8047, 22160), (9904, 18005), (11080, 16094), (12380, 14404)]