21005412

素因数分解:

$2^2\times 3^1\times {\mathrm{19}}^1\times {\mathrm{181}}^1\times {\mathrm{509}}^1$

素因数の和:716

約数の個数: 48

約数和(自身を含む): 51979200

約数和(自身を除く): 30973788

約数列:

[1, 2, 3, 4, 6, 12, 19, 38, 57, 76, 114, 181, 228, 362, 509, 543, 724, 1018, 1086, 1527, 2036, 2172, 3054, 3439, 6108, 6878, 9671, 10317, 13756, 19342, 20634, 29013, 38684, 41268, 58026, 92129, 116052, 184258, 276387, 368516, 552774, 1105548, 1750451, 3500902, 5251353, 7001804, 10502706, 21005412]

約数ペア:

[(1, 21005412), (2, 10502706), (3, 7001804), (4, 5251353), (6, 3500902), (12, 1750451), (19, 1105548), (38, 552774), (57, 368516), (76, 276387), (114, 184258), (181, 116052), (228, 92129), (362, 58026), (509, 41268), (543, 38684), (724, 29013), (1018, 20634), (1086, 19342), (1527, 13756), (2036, 10317), (2172, 9671), (3054, 6878), (3439, 6108)]