81434260

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^2\times {\mathrm{43}}^1\times {\mathrm{179}}^1$

素因数の和:277

約数の個数: 72

約数和(自身を含む): 183949920

約数和(自身を除く): 102515660

約数列:

[1, 2, 4, 5, 10, 20, 23, 43, 46, 86, 92, 115, 172, 179, 215, 230, 358, 430, 460, 529, 716, 860, 895, 989, 1058, 1790, 1978, 2116, 2645, 3580, 3956, 4117, 4945, 5290, 7697, 8234, 9890, 10580, 15394, 16468, 19780, 20585, 22747, 30788, 38485, 41170, 45494, 76970, 82340, 90988, 94691, 113735, 153940, 177031, 189382, 227470, 354062, 378764, 454940, 473455, 708124, 885155, 946910, 1770310, 1893820, 3540620, 4071713, 8143426, 16286852, 20358565, 40717130, 81434260]

約数ペア:

[(1, 81434260), (2, 40717130), (4, 20358565), (5, 16286852), (10, 8143426), (20, 4071713), (23, 3540620), (43, 1893820), (46, 1770310), (86, 946910), (92, 885155), (115, 708124), (172, 473455), (179, 454940), (215, 378764), (230, 354062), (358, 227470), (430, 189382), (460, 177031), (529, 153940), (716, 113735), (860, 94691), (895, 90988), (989, 82340), (1058, 76970), (1790, 45494), (1978, 41170), (2116, 38485), (2645, 30788), (3580, 22747), (3956, 20585), (4117, 19780), (4945, 16468), (5290, 15394), (7697, 10580), (8234, 9890)]