81323540

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{4523}}^1$

素因数の和:4592

約数の個数: 48

約数和(自身を含む): 182407680

約数和(自身を除く): 101084140

約数列:

[1, 2, 4, 5, 10, 20, 29, 31, 58, 62, 116, 124, 145, 155, 290, 310, 580, 620, 899, 1798, 3596, 4495, 4523, 8990, 9046, 17980, 18092, 22615, 45230, 90460, 131167, 140213, 262334, 280426, 524668, 560852, 655835, 701065, 1311670, 1402130, 2623340, 2804260, 4066177, 8132354, 16264708, 20330885, 40661770, 81323540]

約数ペア:

[(1, 81323540), (2, 40661770), (4, 20330885), (5, 16264708), (10, 8132354), (20, 4066177), (29, 2804260), (31, 2623340), (58, 1402130), (62, 1311670), (116, 701065), (124, 655835), (145, 560852), (155, 524668), (290, 280426), (310, 262334), (580, 140213), (620, 131167), (899, 90460), (1798, 45230), (3596, 22615), (4495, 18092), (4523, 17980), (8990, 9046)]