20997684

素因数分解:

$2^2\times 3^3\times {\mathrm{199}}^1\times {\mathrm{977}}^1$

素因数の和:1189

約数の個数: 48

約数和(自身を含む): 54768000

約数和(自身を除く): 33770316

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 54, 108, 199, 398, 597, 796, 977, 1194, 1791, 1954, 2388, 2931, 3582, 3908, 5373, 5862, 7164, 8793, 10746, 11724, 17586, 21492, 26379, 35172, 52758, 105516, 194423, 388846, 583269, 777692, 1166538, 1749807, 2333076, 3499614, 5249421, 6999228, 10498842, 20997684]

約数ペア:

[(1, 20997684), (2, 10498842), (3, 6999228), (4, 5249421), (6, 3499614), (9, 2333076), (12, 1749807), (18, 1166538), (27, 777692), (36, 583269), (54, 388846), (108, 194423), (199, 105516), (398, 52758), (597, 35172), (796, 26379), (977, 21492), (1194, 17586), (1791, 11724), (1954, 10746), (2388, 8793), (2931, 7164), (3582, 5862), (3908, 5373)]