257219648

素因数分解:

$2^6\times 7^1\times {\mathrm{31}}^1\times {\mathrm{18521}}^1$

素因数の和:18571

約数の個数: 56

約数和(自身を含む): 602187264

約数和(自身を除く): 344967616

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 31, 32, 56, 62, 64, 112, 124, 217, 224, 248, 434, 448, 496, 868, 992, 1736, 1984, 3472, 6944, 13888, 18521, 37042, 74084, 129647, 148168, 259294, 296336, 518588, 574151, 592672, 1037176, 1148302, 1185344, 2074352, 2296604, 4019057, 4148704, 4593208, 8038114, 8297408, 9186416, 16076228, 18372832, 32152456, 36745664, 64304912, 128609824, 257219648]

約数ペア:

[(1, 257219648), (2, 128609824), (4, 64304912), (7, 36745664), (8, 32152456), (14, 18372832), (16, 16076228), (28, 9186416), (31, 8297408), (32, 8038114), (56, 4593208), (62, 4148704), (64, 4019057), (112, 2296604), (124, 2074352), (217, 1185344), (224, 1148302), (248, 1037176), (434, 592672), (448, 574151), (496, 518588), (868, 296336), (992, 259294), (1736, 148168), (1984, 129647), (3472, 74084), (6944, 37042), (13888, 18521)]