20197890

素因数分解:

$2^1\times 3^3\times 5^1\times {\mathrm{239}}^1\times {\mathrm{313}}^1$

素因数の和:568

約数の個数: 64

約数和(自身を含む): 54259200

約数和(自身を除く): 34061310

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 27, 30, 45, 54, 90, 135, 239, 270, 313, 478, 626, 717, 939, 1195, 1434, 1565, 1878, 2151, 2390, 2817, 3130, 3585, 4302, 4695, 5634, 6453, 7170, 8451, 9390, 10755, 12906, 14085, 16902, 21510, 28170, 32265, 42255, 64530, 74807, 84510, 149614, 224421, 374035, 448842, 673263, 748070, 1122105, 1346526, 2019789, 2244210, 3366315, 4039578, 6732630, 10098945, 20197890]

約数ペア:

[(1, 20197890), (2, 10098945), (3, 6732630), (5, 4039578), (6, 3366315), (9, 2244210), (10, 2019789), (15, 1346526), (18, 1122105), (27, 748070), (30, 673263), (45, 448842), (54, 374035), (90, 224421), (135, 149614), (239, 84510), (270, 74807), (313, 64530), (478, 42255), (626, 32265), (717, 28170), (939, 21510), (1195, 16902), (1434, 14085), (1565, 12906), (1878, 10755), (2151, 9390), (2390, 8451), (2817, 7170), (3130, 6453), (3585, 5634), (4302, 4695)]