81961569

素因数分解:

$3^2\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{67}}^1\times {\mathrm{109}}^1$

素因数の和:254

約数の個数: 48

約数和(自身を含む): 128356800

約数和(自身を除く): 46395231

約数列:

[1, 3, 9, 29, 43, 67, 87, 109, 129, 201, 261, 327, 387, 603, 981, 1247, 1943, 2881, 3161, 3741, 4687, 5829, 7303, 8643, 9483, 11223, 14061, 17487, 21909, 25929, 28449, 42183, 65727, 83549, 135923, 211787, 250647, 314029, 407769, 635361, 751941, 942087, 1223307, 1906083, 2826261, 9106841, 27320523, 81961569]

約数ペア:

[(1, 81961569), (3, 27320523), (9, 9106841), (29, 2826261), (43, 1906083), (67, 1223307), (87, 942087), (109, 751941), (129, 635361), (201, 407769), (261, 314029), (327, 250647), (387, 211787), (603, 135923), (981, 83549), (1247, 65727), (1943, 42183), (2881, 28449), (3161, 25929), (3741, 21909), (4687, 17487), (5829, 14061), (7303, 11223), (8643, 9483)]