18661888

素因数分解:

$2^9\times 7^1\times {\mathrm{41}}^1\times {\mathrm{127}}^1$

素因数の和:193

約数の個数: 80

約数和(自身を含む): 43997184

約数和(自身を除く): 25335296

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 41, 56, 64, 82, 112, 127, 128, 164, 224, 254, 256, 287, 328, 448, 508, 512, 574, 656, 889, 896, 1016, 1148, 1312, 1778, 1792, 2032, 2296, 2624, 3556, 3584, 4064, 4592, 5207, 5248, 7112, 8128, 9184, 10414, 10496, 14224, 16256, 18368, 20828, 20992, 28448, 32512, 36449, 36736, 41656, 56896, 65024, 72898, 73472, 83312, 113792, 145796, 146944, 166624, 227584, 291592, 333248, 455168, 583184, 666496, 1166368, 1332992, 2332736, 2665984, 4665472, 9330944, 18661888]

約数ペア:

[(1, 18661888), (2, 9330944), (4, 4665472), (7, 2665984), (8, 2332736), (14, 1332992), (16, 1166368), (28, 666496), (32, 583184), (41, 455168), (56, 333248), (64, 291592), (82, 227584), (112, 166624), (127, 146944), (128, 145796), (164, 113792), (224, 83312), (254, 73472), (256, 72898), (287, 65024), (328, 56896), (448, 41656), (508, 36736), (512, 36449), (574, 32512), (656, 28448), (889, 20992), (896, 20828), (1016, 18368), (1148, 16256), (1312, 14224), (1778, 10496), (1792, 10414), (2032, 9184), (2296, 8128), (2624, 7112), (3556, 5248), (3584, 5207), (4064, 4592)]