20683780

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{79}}^1$

素因数の和:173

約数の個数: 96

約数和(自身を含む): 50803200

約数和(自身を除く): 30119420

約数列:

[1, 2, 4, 5, 10, 13, 19, 20, 26, 38, 52, 53, 65, 76, 79, 95, 106, 130, 158, 190, 212, 247, 260, 265, 316, 380, 395, 494, 530, 689, 790, 988, 1007, 1027, 1060, 1235, 1378, 1501, 1580, 2014, 2054, 2470, 2756, 3002, 3445, 4028, 4108, 4187, 4940, 5035, 5135, 6004, 6890, 7505, 8374, 10070, 10270, 13091, 13780, 15010, 16748, 19513, 20140, 20540, 20935, 26182, 30020, 39026, 41870, 52364, 54431, 65455, 78052, 79553, 83740, 97565, 108862, 130910, 159106, 195130, 217724, 261820, 272155, 318212, 390260, 397765, 544310, 795530, 1034189, 1088620, 1591060, 2068378, 4136756, 5170945, 10341890, 20683780]

約数ペア:

[(1, 20683780), (2, 10341890), (4, 5170945), (5, 4136756), (10, 2068378), (13, 1591060), (19, 1088620), (20, 1034189), (26, 795530), (38, 544310), (52, 397765), (53, 390260), (65, 318212), (76, 272155), (79, 261820), (95, 217724), (106, 195130), (130, 159106), (158, 130910), (190, 108862), (212, 97565), (247, 83740), (260, 79553), (265, 78052), (316, 65455), (380, 54431), (395, 52364), (494, 41870), (530, 39026), (689, 30020), (790, 26182), (988, 20935), (1007, 20540), (1027, 20140), (1060, 19513), (1235, 16748), (1378, 15010), (1501, 13780), (1580, 13091), (2014, 10270), (2054, 10070), (2470, 8374), (2756, 7505), (3002, 6890), (3445, 6004), (4028, 5135), (4108, 5035), (4187, 4940)]