81150160

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{157}}^1$

素因数の和:261

約数の個数: 160

約数和(自身を含む): 236984832

約数和(自身を除く): 155834672

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 16, 20, 26, 28, 35, 40, 52, 56, 65, 70, 71, 80, 91, 104, 112, 130, 140, 142, 157, 182, 208, 260, 280, 284, 314, 355, 364, 455, 497, 520, 560, 568, 628, 710, 728, 785, 910, 923, 994, 1040, 1099, 1136, 1256, 1420, 1456, 1570, 1820, 1846, 1988, 2041, 2198, 2485, 2512, 2840, 3140, 3640, 3692, 3976, 4082, 4396, 4615, 4970, 5495, 5680, 6280, 6461, 7280, 7384, 7952, 8164, 8792, 9230, 9940, 10205, 10990, 11147, 12560, 12922, 14287, 14768, 16328, 17584, 18460, 19880, 20410, 21980, 22294, 25844, 28574, 32305, 32656, 36920, 39760, 40820, 43960, 44588, 51688, 55735, 57148, 64610, 71435, 73840, 78029, 81640, 87920, 89176, 103376, 111470, 114296, 129220, 142870, 144911, 156058, 163280, 178352, 222940, 228592, 258440, 285740, 289822, 312116, 390145, 445880, 516880, 571480, 579644, 624232, 724555, 780290, 891760, 1014377, 1142960, 1159288, 1248464, 1449110, 1560580, 2028754, 2318576, 2898220, 3121160, 4057508, 5071885, 5796440, 6242320, 8115016, 10143770, 11592880, 16230032, 20287540, 40575080, 81150160]

約数ペア:

[(1, 81150160), (2, 40575080), (4, 20287540), (5, 16230032), (7, 11592880), (8, 10143770), (10, 8115016), (13, 6242320), (14, 5796440), (16, 5071885), (20, 4057508), (26, 3121160), (28, 2898220), (35, 2318576), (40, 2028754), (52, 1560580), (56, 1449110), (65, 1248464), (70, 1159288), (71, 1142960), (80, 1014377), (91, 891760), (104, 780290), (112, 724555), (130, 624232), (140, 579644), (142, 571480), (157, 516880), (182, 445880), (208, 390145), (260, 312116), (280, 289822), (284, 285740), (314, 258440), (355, 228592), (364, 222940), (455, 178352), (497, 163280), (520, 156058), (560, 144911), (568, 142870), (628, 129220), (710, 114296), (728, 111470), (785, 103376), (910, 89176), (923, 87920), (994, 81640), (1040, 78029), (1099, 73840), (1136, 71435), (1256, 64610), (1420, 57148), (1456, 55735), (1570, 51688), (1820, 44588), (1846, 43960), (1988, 40820), (2041, 39760), (2198, 36920), (2485, 32656), (2512, 32305), (2840, 28574), (3140, 25844), (3640, 22294), (3692, 21980), (3976, 20410), (4082, 19880), (4396, 18460), (4615, 17584), (4970, 16328), (5495, 14768), (5680, 14287), (6280, 12922), (6461, 12560), (7280, 11147), (7384, 10990), (7952, 10205), (8164, 9940), (8792, 9230)]