81830980

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{7591}}^1$

素因数の和:7625

約数の個数: 72

約数和(自身を含む): 218102976

約数和(自身を除く): 136271996

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 49, 55, 70, 77, 98, 110, 140, 154, 196, 220, 245, 308, 385, 490, 539, 770, 980, 1078, 1540, 2156, 2695, 5390, 7591, 10780, 15182, 30364, 37955, 53137, 75910, 83501, 106274, 151820, 167002, 212548, 265685, 334004, 371959, 417505, 531370, 584507, 743918, 835010, 1062740, 1169014, 1487836, 1670020, 1859795, 2338028, 2922535, 3719590, 4091549, 5845070, 7439180, 8183098, 11690140, 16366196, 20457745, 40915490, 81830980]

約数ペア:

[(1, 81830980), (2, 40915490), (4, 20457745), (5, 16366196), (7, 11690140), (10, 8183098), (11, 7439180), (14, 5845070), (20, 4091549), (22, 3719590), (28, 2922535), (35, 2338028), (44, 1859795), (49, 1670020), (55, 1487836), (70, 1169014), (77, 1062740), (98, 835010), (110, 743918), (140, 584507), (154, 531370), (196, 417505), (220, 371959), (245, 334004), (308, 265685), (385, 212548), (490, 167002), (539, 151820), (770, 106274), (980, 83501), (1078, 75910), (1540, 53137), (2156, 37955), (2695, 30364), (5390, 15182), (7591, 10780)]