81564444

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^1\times {\mathrm{397}}^1\times {\mathrm{439}}^1$

素因数の和:859

約数の個数: 72

約数和(自身を含む): 223102880

約数和(自身を除く): 141538436

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 26, 36, 39, 52, 78, 117, 156, 234, 397, 439, 468, 794, 878, 1191, 1317, 1588, 1756, 2382, 2634, 3573, 3951, 4764, 5161, 5268, 5707, 7146, 7902, 10322, 11414, 14292, 15483, 15804, 17121, 20644, 22828, 30966, 34242, 46449, 51363, 61932, 68484, 92898, 102726, 174283, 185796, 205452, 348566, 522849, 697132, 1045698, 1568547, 2091396, 2265679, 3137094, 4531358, 6274188, 6797037, 9062716, 13594074, 20391111, 27188148, 40782222, 81564444]

約数ペア:

[(1, 81564444), (2, 40782222), (3, 27188148), (4, 20391111), (6, 13594074), (9, 9062716), (12, 6797037), (13, 6274188), (18, 4531358), (26, 3137094), (36, 2265679), (39, 2091396), (52, 1568547), (78, 1045698), (117, 697132), (156, 522849), (234, 348566), (397, 205452), (439, 185796), (468, 174283), (794, 102726), (878, 92898), (1191, 68484), (1317, 61932), (1588, 51363), (1756, 46449), (2382, 34242), (2634, 30966), (3573, 22828), (3951, 20644), (4764, 17121), (5161, 15804), (5268, 15483), (5707, 14292), (7146, 11414), (7902, 10322)]