31021263

素因数分解:

$3^2\times 7^3\times {\mathrm{13}}^1\times {\mathrm{773}}^1$

素因数の和:813

約数の個数: 48

約数和(自身を含む): 56347200

約数和(自身を除く): 25325937

約数列:

[1, 3, 7, 9, 13, 21, 39, 49, 63, 91, 117, 147, 273, 343, 441, 637, 773, 819, 1029, 1911, 2319, 3087, 4459, 5411, 5733, 6957, 10049, 13377, 16233, 30147, 37877, 40131, 48699, 70343, 90441, 113631, 211029, 265139, 340893, 492401, 633087, 795417, 1477203, 2386251, 3446807, 4431609, 10340421, 31021263]

約数ペア:

[(1, 31021263), (3, 10340421), (7, 4431609), (9, 3446807), (13, 2386251), (21, 1477203), (39, 795417), (49, 633087), (63, 492401), (91, 340893), (117, 265139), (147, 211029), (273, 113631), (343, 90441), (441, 70343), (637, 48699), (773, 40131), (819, 37877), (1029, 30147), (1911, 16233), (2319, 13377), (3087, 10049), (4459, 6957), (5411, 5733)]