20949110140

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{89}}^1\times {\mathrm{181}}^1\times {\mathrm{1327}}^1$

素因数の和:1620

約数の個数: 144

約数和(自身を含む): 52075820160

約数和(自身を除く): 31126710020

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 89, 98, 140, 178, 181, 196, 245, 356, 362, 445, 490, 623, 724, 890, 905, 980, 1246, 1267, 1327, 1780, 1810, 2492, 2534, 2654, 3115, 3620, 4361, 5068, 5308, 6230, 6335, 6635, 8722, 8869, 9289, 12460, 12670, 13270, 16109, 17444, 17738, 18578, 21805, 25340, 26540, 32218, 35476, 37156, 43610, 44345, 46445, 64436, 65023, 80545, 87220, 88690, 92890, 112763, 118103, 130046, 161090, 177380, 185780, 225526, 236206, 240187, 260092, 322180, 325115, 451052, 472412, 480374, 563815, 590515, 650230, 789341, 826721, 960748, 1127630, 1181030, 1200935, 1300460, 1578682, 1653442, 1681309, 2255260, 2362060, 2401870, 3157364, 3306884, 3362618, 3946705, 4133605, 4803740, 5787047, 6725236, 7893410, 8267210, 8406545, 11574094, 11769163, 15786820, 16534420, 16813090, 21376643, 23148188, 23538326, 28935235, 33626180, 42753286, 47076652, 57870470, 58845815, 85506572, 106883215, 115740940, 117691630, 149636501, 213766430, 235383260, 299273002, 427532860, 598546004, 748182505, 1047455507, 1496365010, 2094911014, 2992730020, 4189822028, 5237277535, 10474555070, 20949110140]

約数ペア:

[(1, 20949110140), (2, 10474555070), (4, 5237277535), (5, 4189822028), (7, 2992730020), (10, 2094911014), (14, 1496365010), (20, 1047455507), (28, 748182505), (35, 598546004), (49, 427532860), (70, 299273002), (89, 235383260), (98, 213766430), (140, 149636501), (178, 117691630), (181, 115740940), (196, 106883215), (245, 85506572), (356, 58845815), (362, 57870470), (445, 47076652), (490, 42753286), (623, 33626180), (724, 28935235), (890, 23538326), (905, 23148188), (980, 21376643), (1246, 16813090), (1267, 16534420), (1327, 15786820), (1780, 11769163), (1810, 11574094), (2492, 8406545), (2534, 8267210), (2654, 7893410), (3115, 6725236), (3620, 5787047), (4361, 4803740), (5068, 4133605), (5308, 3946705), (6230, 3362618), (6335, 3306884), (6635, 3157364), (8722, 2401870), (8869, 2362060), (9289, 2255260), (12460, 1681309), (12670, 1653442), (13270, 1578682), (16109, 1300460), (17444, 1200935), (17738, 1181030), (18578, 1127630), (21805, 960748), (25340, 826721), (26540, 789341), (32218, 650230), (35476, 590515), (37156, 563815), (43610, 480374), (44345, 472412), (46445, 451052), (64436, 325115), (65023, 322180), (80545, 260092), (87220, 240187), (88690, 236206), (92890, 225526), (112763, 185780), (118103, 177380), (130046, 161090)]