20651358

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{347}}^1$

素因数の和:481

約数の個数: 64

約数和(自身を含む): 51448320

約数和(自身を除く): 30796962

約数列:

[1, 2, 3, 6, 7, 13, 14, 21, 26, 39, 42, 78, 91, 109, 182, 218, 273, 327, 347, 546, 654, 694, 763, 1041, 1417, 1526, 2082, 2289, 2429, 2834, 4251, 4511, 4578, 4858, 7287, 8502, 9022, 9919, 13533, 14574, 19838, 27066, 29757, 31577, 37823, 59514, 63154, 75646, 94731, 113469, 189462, 226938, 264761, 491699, 529522, 794283, 983398, 1475097, 1588566, 2950194, 3441893, 6883786, 10325679, 20651358]

約数ペア:

[(1, 20651358), (2, 10325679), (3, 6883786), (6, 3441893), (7, 2950194), (13, 1588566), (14, 1475097), (21, 983398), (26, 794283), (39, 529522), (42, 491699), (78, 264761), (91, 226938), (109, 189462), (182, 113469), (218, 94731), (273, 75646), (327, 63154), (347, 59514), (546, 37823), (654, 31577), (694, 29757), (763, 27066), (1041, 19838), (1417, 14574), (1526, 13533), (2082, 9919), (2289, 9022), (2429, 8502), (2834, 7287), (4251, 4858), (4511, 4578)]