18673408

素因数分解:

$2^8\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{181}}^1$

素因数の和:241

約数の個数: 72

約数和(自身を含む): 41664896

約数和(自身を除く): 22991488

約数列:

[1, 2, 4, 8, 13, 16, 26, 31, 32, 52, 62, 64, 104, 124, 128, 181, 208, 248, 256, 362, 403, 416, 496, 724, 806, 832, 992, 1448, 1612, 1664, 1984, 2353, 2896, 3224, 3328, 3968, 4706, 5611, 5792, 6448, 7936, 9412, 11222, 11584, 12896, 18824, 22444, 23168, 25792, 37648, 44888, 46336, 51584, 72943, 75296, 89776, 103168, 145886, 150592, 179552, 291772, 301184, 359104, 583544, 602368, 718208, 1167088, 1436416, 2334176, 4668352, 9336704, 18673408]

約数ペア:

[(1, 18673408), (2, 9336704), (4, 4668352), (8, 2334176), (13, 1436416), (16, 1167088), (26, 718208), (31, 602368), (32, 583544), (52, 359104), (62, 301184), (64, 291772), (104, 179552), (124, 150592), (128, 145886), (181, 103168), (208, 89776), (248, 75296), (256, 72943), (362, 51584), (403, 46336), (416, 44888), (496, 37648), (724, 25792), (806, 23168), (832, 22444), (992, 18824), (1448, 12896), (1612, 11584), (1664, 11222), (1984, 9412), (2353, 7936), (2896, 6448), (3224, 5792), (3328, 5611), (3968, 4706)]