18971008

素因数分解:

$2^7\times 7^1\times {\mathrm{31}}^1\times {\mathrm{683}}^1$

素因数の和:735

約数の個数: 64

約数和(自身を含む): 44651520

約数和(自身を除く): 25680512

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 31, 32, 56, 62, 64, 112, 124, 128, 217, 224, 248, 434, 448, 496, 683, 868, 896, 992, 1366, 1736, 1984, 2732, 3472, 3968, 4781, 5464, 6944, 9562, 10928, 13888, 19124, 21173, 21856, 27776, 38248, 42346, 43712, 76496, 84692, 87424, 148211, 152992, 169384, 296422, 305984, 338768, 592844, 611968, 677536, 1185688, 1355072, 2371376, 2710144, 4742752, 9485504, 18971008]

約数ペア:

[(1, 18971008), (2, 9485504), (4, 4742752), (7, 2710144), (8, 2371376), (14, 1355072), (16, 1185688), (28, 677536), (31, 611968), (32, 592844), (56, 338768), (62, 305984), (64, 296422), (112, 169384), (124, 152992), (128, 148211), (217, 87424), (224, 84692), (248, 76496), (434, 43712), (448, 42346), (496, 38248), (683, 27776), (868, 21856), (896, 21173), (992, 19124), (1366, 13888), (1736, 10928), (1984, 9562), (2732, 6944), (3472, 5464), (3968, 4781)]