81989648

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{89}}^1\times {\mathrm{103}}^1$

素因数の和:256

約数の個数: 80

約数和(自身を含む): 178738560

約数和(自身を除く): 96748912

約数列:

[1, 2, 4, 8, 13, 16, 26, 43, 52, 86, 89, 103, 104, 172, 178, 206, 208, 344, 356, 412, 559, 688, 712, 824, 1118, 1157, 1339, 1424, 1648, 2236, 2314, 2678, 3827, 4429, 4472, 4628, 5356, 7654, 8858, 8944, 9167, 9256, 10712, 15308, 17716, 18334, 18512, 21424, 30616, 35432, 36668, 49751, 57577, 61232, 70864, 73336, 99502, 115154, 119171, 146672, 199004, 230308, 238342, 394181, 398008, 460616, 476684, 788362, 796016, 921232, 953368, 1576724, 1906736, 3153448, 5124353, 6306896, 10248706, 20497412, 40994824, 81989648]

約数ペア:

[(1, 81989648), (2, 40994824), (4, 20497412), (8, 10248706), (13, 6306896), (16, 5124353), (26, 3153448), (43, 1906736), (52, 1576724), (86, 953368), (89, 921232), (103, 796016), (104, 788362), (172, 476684), (178, 460616), (206, 398008), (208, 394181), (344, 238342), (356, 230308), (412, 199004), (559, 146672), (688, 119171), (712, 115154), (824, 99502), (1118, 73336), (1157, 70864), (1339, 61232), (1424, 57577), (1648, 49751), (2236, 36668), (2314, 35432), (2678, 30616), (3827, 21424), (4429, 18512), (4472, 18334), (4628, 17716), (5356, 15308), (7654, 10712), (8858, 9256), (8944, 9167)]