18897904

素因数分解:

$2^4\times {\mathrm{23}}^1\times {\mathrm{89}}^1\times {\mathrm{577}}^1$

素因数の和:697

約数の個数: 40

約数和(自身を含む): 38702880

約数和(自身を除く): 19804976

約数列:

[1, 2, 4, 8, 16, 23, 46, 89, 92, 178, 184, 356, 368, 577, 712, 1154, 1424, 2047, 2308, 4094, 4616, 8188, 9232, 13271, 16376, 26542, 32752, 51353, 53084, 102706, 106168, 205412, 212336, 410824, 821648, 1181119, 2362238, 4724476, 9448952, 18897904]

約数ペア:

[(1, 18897904), (2, 9448952), (4, 4724476), (8, 2362238), (16, 1181119), (23, 821648), (46, 410824), (89, 212336), (92, 205412), (178, 106168), (184, 102706), (356, 53084), (368, 51353), (577, 32752), (712, 26542), (1154, 16376), (1424, 13271), (2047, 9232), (2308, 8188), (4094, 4616)]