17996680

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{653}}^1$

素因数の和:730

約数の個数: 64

約数和(自身を含む): 44498160

約数和(自身を除く): 26501480

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 53, 65, 104, 106, 130, 212, 260, 265, 424, 520, 530, 653, 689, 1060, 1306, 1378, 2120, 2612, 2756, 3265, 3445, 5224, 5512, 6530, 6890, 8489, 13060, 13780, 16978, 26120, 27560, 33956, 34609, 42445, 67912, 69218, 84890, 138436, 169780, 173045, 276872, 339560, 346090, 449917, 692180, 899834, 1384360, 1799668, 2249585, 3599336, 4499170, 8998340, 17996680]

約数ペア:

[(1, 17996680), (2, 8998340), (4, 4499170), (5, 3599336), (8, 2249585), (10, 1799668), (13, 1384360), (20, 899834), (26, 692180), (40, 449917), (52, 346090), (53, 339560), (65, 276872), (104, 173045), (106, 169780), (130, 138436), (212, 84890), (260, 69218), (265, 67912), (424, 42445), (520, 34609), (530, 33956), (653, 27560), (689, 26120), (1060, 16978), (1306, 13780), (1378, 13060), (2120, 8489), (2612, 6890), (2756, 6530), (3265, 5512), (3445, 5224)]