20621874

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{179}}^1\times {\mathrm{211}}^1$

素因数の和:415

約数の個数: 64

約数和(自身を含む): 51287040

約数和(自身を除く): 30665166

約数列:

[1, 2, 3, 6, 7, 13, 14, 21, 26, 39, 42, 78, 91, 179, 182, 211, 273, 358, 422, 537, 546, 633, 1074, 1253, 1266, 1477, 2327, 2506, 2743, 2954, 3759, 4431, 4654, 5486, 6981, 7518, 8229, 8862, 13962, 16289, 16458, 19201, 32578, 37769, 38402, 48867, 57603, 75538, 97734, 113307, 115206, 226614, 264383, 490997, 528766, 793149, 981994, 1472991, 1586298, 2945982, 3436979, 6873958, 10310937, 20621874]

約数ペア:

[(1, 20621874), (2, 10310937), (3, 6873958), (6, 3436979), (7, 2945982), (13, 1586298), (14, 1472991), (21, 981994), (26, 793149), (39, 528766), (42, 490997), (78, 264383), (91, 226614), (179, 115206), (182, 113307), (211, 97734), (273, 75538), (358, 57603), (422, 48867), (537, 38402), (546, 37769), (633, 32578), (1074, 19201), (1253, 16458), (1266, 16289), (1477, 13962), (2327, 8862), (2506, 8229), (2743, 7518), (2954, 6981), (3759, 5486), (4431, 4654)]