81989325

素因数分解:

$3^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{157}}^1\times {\mathrm{211}}^1$

素因数の和:395

約数の個数: 72

約数和(自身を含む): 161986656

約数和(自身を除く): 79997331

約数列:

[1, 3, 5, 9, 11, 15, 25, 33, 45, 55, 75, 99, 157, 165, 211, 225, 275, 471, 495, 633, 785, 825, 1055, 1413, 1727, 1899, 2321, 2355, 2475, 3165, 3925, 5181, 5275, 6963, 7065, 8635, 9495, 11605, 11775, 15543, 15825, 20889, 25905, 33127, 34815, 35325, 43175, 47475, 58025, 77715, 99381, 104445, 129525, 165635, 174075, 298143, 364397, 388575, 496905, 522225, 828175, 1093191, 1490715, 1821985, 2484525, 3279573, 5465955, 7453575, 9109925, 16397865, 27329775, 81989325]

約数ペア:

[(1, 81989325), (3, 27329775), (5, 16397865), (9, 9109925), (11, 7453575), (15, 5465955), (25, 3279573), (33, 2484525), (45, 1821985), (55, 1490715), (75, 1093191), (99, 828175), (157, 522225), (165, 496905), (211, 388575), (225, 364397), (275, 298143), (471, 174075), (495, 165635), (633, 129525), (785, 104445), (825, 99381), (1055, 77715), (1413, 58025), (1727, 47475), (1899, 43175), (2321, 35325), (2355, 34815), (2475, 33127), (3165, 25905), (3925, 20889), (5181, 15825), (5275, 15543), (6963, 11775), (7065, 11605), (8635, 9495)]