71381620

素因数分解:

$2^2\times 5^1\times {\mathrm{127}}^1\times {\mathrm{157}}^1\times {\mathrm{179}}^1$

素因数の和:472

約数の個数: 48

約数和(自身を含む): 152893440

約数和(自身を除く): 81511820

約数列:

[1, 2, 4, 5, 10, 20, 127, 157, 179, 254, 314, 358, 508, 628, 635, 716, 785, 895, 1270, 1570, 1790, 2540, 3140, 3580, 19939, 22733, 28103, 39878, 45466, 56206, 79756, 90932, 99695, 112412, 113665, 140515, 199390, 227330, 281030, 398780, 454660, 562060, 3569081, 7138162, 14276324, 17845405, 35690810, 71381620]

約数ペア:

[(1, 71381620), (2, 35690810), (4, 17845405), (5, 14276324), (10, 7138162), (20, 3569081), (127, 562060), (157, 454660), (179, 398780), (254, 281030), (314, 227330), (358, 199390), (508, 140515), (628, 113665), (635, 112412), (716, 99695), (785, 90932), (895, 79756), (1270, 56206), (1570, 45466), (1790, 39878), (2540, 28103), (3140, 22733), (3580, 19939)]