20459580

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{131}}^1\times {\mathrm{137}}^1$

素因数の和:299

約数の個数: 96

約数和(自身を含む): 61205760

約数和(自身を除く): 40746180

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 19, 20, 30, 38, 57, 60, 76, 95, 114, 131, 137, 190, 228, 262, 274, 285, 380, 393, 411, 524, 548, 570, 655, 685, 786, 822, 1140, 1310, 1370, 1572, 1644, 1965, 2055, 2489, 2603, 2620, 2740, 3930, 4110, 4978, 5206, 7467, 7809, 7860, 8220, 9956, 10412, 12445, 13015, 14934, 15618, 17947, 24890, 26030, 29868, 31236, 35894, 37335, 39045, 49780, 52060, 53841, 71788, 74670, 78090, 89735, 107682, 149340, 156180, 179470, 215364, 269205, 340993, 358940, 538410, 681986, 1022979, 1076820, 1363972, 1704965, 2045958, 3409930, 4091916, 5114895, 6819860, 10229790, 20459580]

約数ペア:

[(1, 20459580), (2, 10229790), (3, 6819860), (4, 5114895), (5, 4091916), (6, 3409930), (10, 2045958), (12, 1704965), (15, 1363972), (19, 1076820), (20, 1022979), (30, 681986), (38, 538410), (57, 358940), (60, 340993), (76, 269205), (95, 215364), (114, 179470), (131, 156180), (137, 149340), (190, 107682), (228, 89735), (262, 78090), (274, 74670), (285, 71788), (380, 53841), (393, 52060), (411, 49780), (524, 39045), (548, 37335), (570, 35894), (655, 31236), (685, 29868), (786, 26030), (822, 24890), (1140, 17947), (1310, 15618), (1370, 14934), (1572, 13015), (1644, 12445), (1965, 10412), (2055, 9956), (2489, 8220), (2603, 7860), (2620, 7809), (2740, 7467), (3930, 5206), (4110, 4978)]