20759570

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{131}}^1$

素因数の和:227

約数の個数: 64

約数和(自身を含む): 43110144

約数和(自身を除く): 22350574

約数列:

[1, 2, 5, 10, 13, 23, 26, 46, 53, 65, 106, 115, 130, 131, 230, 262, 265, 299, 530, 598, 655, 689, 1219, 1310, 1378, 1495, 1703, 2438, 2990, 3013, 3406, 3445, 6026, 6095, 6890, 6943, 8515, 12190, 13886, 15065, 15847, 17030, 30130, 31694, 34715, 39169, 69430, 78338, 79235, 90259, 158470, 159689, 180518, 195845, 319378, 391690, 451295, 798445, 902590, 1596890, 2075957, 4151914, 10379785, 20759570]

約数ペア:

[(1, 20759570), (2, 10379785), (5, 4151914), (10, 2075957), (13, 1596890), (23, 902590), (26, 798445), (46, 451295), (53, 391690), (65, 319378), (106, 195845), (115, 180518), (130, 159689), (131, 158470), (230, 90259), (262, 79235), (265, 78338), (299, 69430), (530, 39169), (598, 34715), (655, 31694), (689, 30130), (1219, 17030), (1310, 15847), (1378, 15065), (1495, 13886), (1703, 12190), (2438, 8515), (2990, 6943), (3013, 6890), (3406, 6095), (3445, 6026)]