21130716

素因数分解:

$2^2\times 3^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{1321}}^1$

素因数の和:1402

約数の個数: 48

約数和(自身を含む): 52118528

約数和(自身を除く): 30987812

約数列:

[1, 2, 3, 4, 6, 12, 31, 43, 62, 86, 93, 124, 129, 172, 186, 258, 372, 516, 1321, 1333, 2642, 2666, 3963, 3999, 5284, 5332, 7926, 7998, 15852, 15996, 40951, 56803, 81902, 113606, 122853, 163804, 170409, 227212, 245706, 340818, 491412, 681636, 1760893, 3521786, 5282679, 7043572, 10565358, 21130716]

約数ペア:

[(1, 21130716), (2, 10565358), (3, 7043572), (4, 5282679), (6, 3521786), (12, 1760893), (31, 681636), (43, 491412), (62, 340818), (86, 245706), (93, 227212), (124, 170409), (129, 163804), (172, 122853), (186, 113606), (258, 81902), (372, 56803), (516, 40951), (1321, 15996), (1333, 15852), (2642, 7998), (2666, 7926), (3963, 5332), (3999, 5284)]