81459320

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{179}}^1\times {\mathrm{367}}^1$

素因数の和:588

約数の個数: 64

約数和(自身を含む): 190771200

約数和(自身を除く): 109311880

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 179, 248, 310, 358, 367, 620, 716, 734, 895, 1240, 1432, 1468, 1790, 1835, 2936, 3580, 3670, 5549, 7160, 7340, 11098, 11377, 14680, 22196, 22754, 27745, 44392, 45508, 55490, 56885, 65693, 91016, 110980, 113770, 131386, 221960, 227540, 262772, 328465, 455080, 525544, 656930, 1313860, 2036483, 2627720, 4072966, 8145932, 10182415, 16291864, 20364830, 40729660, 81459320]

約数ペア:

[(1, 81459320), (2, 40729660), (4, 20364830), (5, 16291864), (8, 10182415), (10, 8145932), (20, 4072966), (31, 2627720), (40, 2036483), (62, 1313860), (124, 656930), (155, 525544), (179, 455080), (248, 328465), (310, 262772), (358, 227540), (367, 221960), (620, 131386), (716, 113770), (734, 110980), (895, 91016), (1240, 65693), (1432, 56885), (1468, 55490), (1790, 45508), (1835, 44392), (2936, 27745), (3580, 22754), (3670, 22196), (5549, 14680), (7160, 11377), (7340, 11098)]