20121424533

素因数分解:

$3^2\times 7^2\times {\mathrm{281}}^1\times {\mathrm{397}}^1\times {\mathrm{409}}^1$

素因数の和:1107

約数の個数: 72

約数和(自身を含む): 34098419160

約数和(自身を除く): 13976994627

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 281, 397, 409, 441, 843, 1191, 1227, 1967, 2529, 2779, 2863, 3573, 3681, 5901, 8337, 8589, 13769, 17703, 19453, 20041, 25011, 25767, 41307, 58359, 60123, 111557, 114929, 123921, 162373, 175077, 180369, 334671, 344787, 487119, 780899, 804503, 1004013, 1034361, 1136611, 1461357, 2342697, 2413509, 3409833, 5466293, 5631521, 7028091, 7240527, 7956277, 10229499, 16398879, 16894563, 23868831, 45626813, 49196637, 50683689, 71606493, 136880439, 319387691, 410641317, 958163073, 2235713837, 2874489219, 6707141511, 20121424533]

約数ペア:

[(1, 20121424533), (3, 6707141511), (7, 2874489219), (9, 2235713837), (21, 958163073), (49, 410641317), (63, 319387691), (147, 136880439), (281, 71606493), (397, 50683689), (409, 49196637), (441, 45626813), (843, 23868831), (1191, 16894563), (1227, 16398879), (1967, 10229499), (2529, 7956277), (2779, 7240527), (2863, 7028091), (3573, 5631521), (3681, 5466293), (5901, 3409833), (8337, 2413509), (8589, 2342697), (13769, 1461357), (17703, 1136611), (19453, 1034361), (20041, 1004013), (25011, 804503), (25767, 780899), (41307, 487119), (58359, 344787), (60123, 334671), (111557, 180369), (114929, 175077), (123921, 162373)]