18871965

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{181}}^1\times {\mathrm{331}}^1$

素因数の和:530

約数の個数: 48

約数和(自身を含む): 37704576

約数和(自身を除く): 18832611

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 105, 181, 315, 331, 543, 905, 993, 1267, 1629, 1655, 2317, 2715, 2979, 3801, 4965, 6335, 6951, 8145, 11403, 11585, 14895, 19005, 20853, 34755, 57015, 59911, 104265, 179733, 299555, 419377, 539199, 898665, 1258131, 2096885, 2695995, 3774393, 6290655, 18871965]

約数ペア:

[(1, 18871965), (3, 6290655), (5, 3774393), (7, 2695995), (9, 2096885), (15, 1258131), (21, 898665), (35, 539199), (45, 419377), (63, 299555), (105, 179733), (181, 104265), (315, 59911), (331, 57015), (543, 34755), (905, 20853), (993, 19005), (1267, 14895), (1629, 11585), (1655, 11403), (2317, 8145), (2715, 6951), (2979, 6335), (3801, 4965)]