19871145

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{199}}^1\times {\mathrm{317}}^1$

素因数の和:534

約数の個数: 48

約数和(自身を含む): 39686400

約数和(自身を除く): 19815255

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 105, 199, 315, 317, 597, 951, 995, 1393, 1585, 1791, 2219, 2853, 2985, 4179, 4755, 6657, 6965, 8955, 11095, 12537, 14265, 19971, 20895, 33285, 62685, 63083, 99855, 189249, 315415, 441581, 567747, 946245, 1324743, 2207905, 2838735, 3974229, 6623715, 19871145]

約数ペア:

[(1, 19871145), (3, 6623715), (5, 3974229), (7, 2838735), (9, 2207905), (15, 1324743), (21, 946245), (35, 567747), (45, 441581), (63, 315415), (105, 189249), (199, 99855), (315, 63083), (317, 62685), (597, 33285), (951, 20895), (995, 19971), (1393, 14265), (1585, 12537), (1791, 11095), (2219, 8955), (2853, 6965), (2985, 6657), (4179, 4755)]