81714100

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{239}}^1\times {\mathrm{263}}^1$

素因数の和:529

約数の個数: 72

約数和(自身を含む): 192487680

約数和(自身を除く): 110773580

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 65, 100, 130, 239, 260, 263, 325, 478, 526, 650, 956, 1052, 1195, 1300, 1315, 2390, 2630, 3107, 3419, 4780, 5260, 5975, 6214, 6575, 6838, 11950, 12428, 13150, 13676, 15535, 17095, 23900, 26300, 31070, 34190, 62140, 62857, 68380, 77675, 85475, 125714, 155350, 170950, 251428, 310700, 314285, 341900, 628570, 817141, 1257140, 1571425, 1634282, 3142850, 3268564, 4085705, 6285700, 8171410, 16342820, 20428525, 40857050, 81714100]

約数ペア:

[(1, 81714100), (2, 40857050), (4, 20428525), (5, 16342820), (10, 8171410), (13, 6285700), (20, 4085705), (25, 3268564), (26, 3142850), (50, 1634282), (52, 1571425), (65, 1257140), (100, 817141), (130, 628570), (239, 341900), (260, 314285), (263, 310700), (325, 251428), (478, 170950), (526, 155350), (650, 125714), (956, 85475), (1052, 77675), (1195, 68380), (1300, 62857), (1315, 62140), (2390, 34190), (2630, 31070), (3107, 26300), (3419, 23900), (4780, 17095), (5260, 15535), (5975, 13676), (6214, 13150), (6575, 12428), (6838, 11950)]