19916145

素因数分解:

$3^3\times 5^1\times {\mathrm{151}}^1\times {\mathrm{977}}^1$

素因数の和:1142

約数の個数: 32

約数和(自身を含む): 35677440

約数和(自身を除く): 15761295

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 151, 453, 755, 977, 1359, 2265, 2931, 4077, 4885, 6795, 8793, 14655, 20385, 26379, 43965, 131895, 147527, 442581, 737635, 1327743, 2212905, 3983229, 6638715, 19916145]

約数ペア:

[(1, 19916145), (3, 6638715), (5, 3983229), (9, 2212905), (15, 1327743), (27, 737635), (45, 442581), (135, 147527), (151, 131895), (453, 43965), (755, 26379), (977, 20385), (1359, 14655), (2265, 8793), (2931, 6795), (4077, 4885)]