18773560

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{457}}^1$

素因数の和:560

約数の個数: 64

約数和(自身を含む): 46166400

約数和(自身を除く): 27392840

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 79, 104, 130, 158, 260, 316, 395, 457, 520, 632, 790, 914, 1027, 1580, 1828, 2054, 2285, 3160, 3656, 4108, 4570, 5135, 5941, 8216, 9140, 10270, 11882, 18280, 20540, 23764, 29705, 36103, 41080, 47528, 59410, 72206, 118820, 144412, 180515, 237640, 288824, 361030, 469339, 722060, 938678, 1444120, 1877356, 2346695, 3754712, 4693390, 9386780, 18773560]

約数ペア:

[(1, 18773560), (2, 9386780), (4, 4693390), (5, 3754712), (8, 2346695), (10, 1877356), (13, 1444120), (20, 938678), (26, 722060), (40, 469339), (52, 361030), (65, 288824), (79, 237640), (104, 180515), (130, 144412), (158, 118820), (260, 72206), (316, 59410), (395, 47528), (457, 41080), (520, 36103), (632, 29705), (790, 23764), (914, 20540), (1027, 18280), (1580, 11882), (1828, 10270), (2054, 9140), (2285, 8216), (3160, 5941), (3656, 5135), (4108, 4570)]