20873020

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{19}}^2\times {\mathrm{59}}^1$

素因数の和:120

約数の個数: 108

約数和(自身を含む): 54726840

約数和(自身を除く): 33853820

約数列:

[1, 2, 4, 5, 7, 10, 14, 19, 20, 28, 35, 38, 49, 59, 70, 76, 95, 98, 118, 133, 140, 190, 196, 236, 245, 266, 295, 361, 380, 413, 490, 532, 590, 665, 722, 826, 931, 980, 1121, 1180, 1330, 1444, 1652, 1805, 1862, 2065, 2242, 2527, 2660, 2891, 3610, 3724, 4130, 4484, 4655, 5054, 5605, 5782, 7220, 7847, 8260, 9310, 10108, 11210, 11564, 12635, 14455, 15694, 17689, 18620, 21299, 22420, 25270, 28910, 31388, 35378, 39235, 42598, 50540, 54929, 57820, 70756, 78470, 85196, 88445, 106495, 109858, 149093, 156940, 176890, 212990, 219716, 274645, 298186, 353780, 425980, 549290, 596372, 745465, 1043651, 1098580, 1490930, 2087302, 2981860, 4174604, 5218255, 10436510, 20873020]

約数ペア:

[(1, 20873020), (2, 10436510), (4, 5218255), (5, 4174604), (7, 2981860), (10, 2087302), (14, 1490930), (19, 1098580), (20, 1043651), (28, 745465), (35, 596372), (38, 549290), (49, 425980), (59, 353780), (70, 298186), (76, 274645), (95, 219716), (98, 212990), (118, 176890), (133, 156940), (140, 149093), (190, 109858), (196, 106495), (236, 88445), (245, 85196), (266, 78470), (295, 70756), (361, 57820), (380, 54929), (413, 50540), (490, 42598), (532, 39235), (590, 35378), (665, 31388), (722, 28910), (826, 25270), (931, 22420), (980, 21299), (1121, 18620), (1180, 17689), (1330, 15694), (1444, 14455), (1652, 12635), (1805, 11564), (1862, 11210), (2065, 10108), (2242, 9310), (2527, 8260), (2660, 7847), (2891, 7220), (3610, 5782), (3724, 5605), (4130, 5054), (4484, 4655)]