81306484

素因数分解:

$2^2\times 7^2\times {\mathrm{59}}^1\times {\mathrm{79}}^1\times {\mathrm{89}}^1$

素因数の和:245

約数の個数: 72

約数和(自身を含む): 172368000

約数和(自身を除く): 91061516

約数列:

[1, 2, 4, 7, 14, 28, 49, 59, 79, 89, 98, 118, 158, 178, 196, 236, 316, 356, 413, 553, 623, 826, 1106, 1246, 1652, 2212, 2492, 2891, 3871, 4361, 4661, 5251, 5782, 7031, 7742, 8722, 9322, 10502, 11564, 14062, 15484, 17444, 18644, 21004, 28124, 32627, 36757, 49217, 65254, 73514, 98434, 130508, 147028, 196868, 228389, 257299, 344519, 414829, 456778, 514598, 689038, 829658, 913556, 1029196, 1378076, 1659316, 2903803, 5807606, 11615212, 20326621, 40653242, 81306484]

約数ペア:

[(1, 81306484), (2, 40653242), (4, 20326621), (7, 11615212), (14, 5807606), (28, 2903803), (49, 1659316), (59, 1378076), (79, 1029196), (89, 913556), (98, 829658), (118, 689038), (158, 514598), (178, 456778), (196, 414829), (236, 344519), (316, 257299), (356, 228389), (413, 196868), (553, 147028), (623, 130508), (826, 98434), (1106, 73514), (1246, 65254), (1652, 49217), (2212, 36757), (2492, 32627), (2891, 28124), (3871, 21004), (4361, 18644), (4661, 17444), (5251, 15484), (5782, 14062), (7031, 11564), (7742, 10502), (8722, 9322)]