21000359565

素因数分解:

$3^3\times 5^1\times {\mathrm{43}}^2\times {\mathrm{84131}}^1$

素因数の和:84231

約数の個数: 48

約数和(自身を含む): 38222850240

約数和(自身を除く): 17222490675

約数列:

[1, 3, 5, 9, 15, 27, 43, 45, 129, 135, 215, 387, 645, 1161, 1849, 1935, 5547, 5805, 9245, 16641, 27735, 49923, 83205, 84131, 249615, 252393, 420655, 757179, 1261965, 2271537, 3617633, 3785895, 10852899, 11357685, 18088165, 32558697, 54264495, 97676091, 155558219, 162793485, 466674657, 488380455, 777791095, 1400023971, 2333373285, 4200071913, 7000119855, 21000359565]

約数ペア:

[(1, 21000359565), (3, 7000119855), (5, 4200071913), (9, 2333373285), (15, 1400023971), (27, 777791095), (43, 488380455), (45, 466674657), (129, 162793485), (135, 155558219), (215, 97676091), (387, 54264495), (645, 32558697), (1161, 18088165), (1849, 11357685), (1935, 10852899), (5547, 3785895), (5805, 3617633), (9245, 2271537), (16641, 1261965), (27735, 757179), (49923, 420655), (83205, 252393), (84131, 249615)]