81796728

素因数分解:

$2^3\times 3^1\times {\mathrm{13}}^1\times {\mathrm{409}}^1\times {\mathrm{641}}^1$

素因数の和:1072

約数の個数: 64

約数和(自身を含む): 221104800

約数和(自身を除く): 139308072

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 24, 26, 39, 52, 78, 104, 156, 312, 409, 641, 818, 1227, 1282, 1636, 1923, 2454, 2564, 3272, 3846, 4908, 5128, 5317, 7692, 8333, 9816, 10634, 15384, 15951, 16666, 21268, 24999, 31902, 33332, 42536, 49998, 63804, 66664, 99996, 127608, 199992, 262169, 524338, 786507, 1048676, 1573014, 2097352, 3146028, 3408197, 6292056, 6816394, 10224591, 13632788, 20449182, 27265576, 40898364, 81796728]

約数ペア:

[(1, 81796728), (2, 40898364), (3, 27265576), (4, 20449182), (6, 13632788), (8, 10224591), (12, 6816394), (13, 6292056), (24, 3408197), (26, 3146028), (39, 2097352), (52, 1573014), (78, 1048676), (104, 786507), (156, 524338), (312, 262169), (409, 199992), (641, 127608), (818, 99996), (1227, 66664), (1282, 63804), (1636, 49998), (1923, 42536), (2454, 33332), (2564, 31902), (3272, 24999), (3846, 21268), (4908, 16666), (5128, 15951), (5317, 15384), (7692, 10634), (8333, 9816)]