81237015

素因数分解:

$3^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{97}}^1\times {\mathrm{503}}^1$

素因数の和:648

約数の個数: 48

約数和(自身を含む): 146397888

約数和(自身を除く): 65160873

約数列:

[1, 3, 5, 9, 15, 37, 45, 97, 111, 185, 291, 333, 485, 503, 555, 873, 1455, 1509, 1665, 2515, 3589, 4365, 4527, 7545, 10767, 17945, 18611, 22635, 32301, 48791, 53835, 55833, 93055, 146373, 161505, 167499, 243955, 279165, 439119, 731865, 837495, 1805267, 2195595, 5415801, 9026335, 16247403, 27079005, 81237015]

約数ペア:

[(1, 81237015), (3, 27079005), (5, 16247403), (9, 9026335), (15, 5415801), (37, 2195595), (45, 1805267), (97, 837495), (111, 731865), (185, 439119), (291, 279165), (333, 243955), (485, 167499), (503, 161505), (555, 146373), (873, 93055), (1455, 55833), (1509, 53835), (1665, 48791), (2515, 32301), (3589, 22635), (4365, 18611), (4527, 17945), (7545, 10767)]