21158334

素因数分解:

$2^1\times 3^4\times {\mathrm{131}}^1\times {\mathrm{997}}^1$

素因数の和:1142

約数の個数: 40

約数和(自身を含む): 47820168

約数和(自身を除く): 26661834

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 81, 131, 162, 262, 393, 786, 997, 1179, 1994, 2358, 2991, 3537, 5982, 7074, 8973, 10611, 17946, 21222, 26919, 53838, 80757, 130607, 161514, 261214, 391821, 783642, 1175463, 2350926, 3526389, 7052778, 10579167, 21158334]

約数ペア:

[(1, 21158334), (2, 10579167), (3, 7052778), (6, 3526389), (9, 2350926), (18, 1175463), (27, 783642), (54, 391821), (81, 261214), (131, 161514), (162, 130607), (262, 80757), (393, 53838), (786, 26919), (997, 21222), (1179, 17946), (1994, 10611), (2358, 8973), (2991, 7074), (3537, 5982)]