20945142

素因数分解:

$2^1\times 3^5\times {\mathrm{71}}^1\times {\mathrm{607}}^1$

素因数の和:695

約数の個数: 48

約数和(自身を含む): 47803392

約数和(自身を除く): 26858250

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 71, 81, 142, 162, 213, 243, 426, 486, 607, 639, 1214, 1278, 1821, 1917, 3642, 3834, 5463, 5751, 10926, 11502, 16389, 17253, 32778, 34506, 43097, 49167, 86194, 98334, 129291, 147501, 258582, 295002, 387873, 775746, 1163619, 2327238, 3490857, 6981714, 10472571, 20945142]

約数ペア:

[(1, 20945142), (2, 10472571), (3, 6981714), (6, 3490857), (9, 2327238), (18, 1163619), (27, 775746), (54, 387873), (71, 295002), (81, 258582), (142, 147501), (162, 129291), (213, 98334), (243, 86194), (426, 49167), (486, 43097), (607, 34506), (639, 32778), (1214, 17253), (1278, 16389), (1821, 11502), (1917, 10926), (3642, 5751), (3834, 5463)]