20505888

素因数分解:

$2^5\times 3^2\times {\mathrm{13}}^1\times {\mathrm{5477}}^1$

素因数の和:5506

約数の個数: 72

約数和(自身を含む): 62810748

約数和(自身を除く): 42304860

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 13, 16, 18, 24, 26, 32, 36, 39, 48, 52, 72, 78, 96, 104, 117, 144, 156, 208, 234, 288, 312, 416, 468, 624, 936, 1248, 1872, 3744, 5477, 10954, 16431, 21908, 32862, 43816, 49293, 65724, 71201, 87632, 98586, 131448, 142402, 175264, 197172, 213603, 262896, 284804, 394344, 427206, 525792, 569608, 640809, 788688, 854412, 1139216, 1281618, 1577376, 1708824, 2278432, 2563236, 3417648, 5126472, 6835296, 10252944, 20505888]

約数ペア:

[(1, 20505888), (2, 10252944), (3, 6835296), (4, 5126472), (6, 3417648), (8, 2563236), (9, 2278432), (12, 1708824), (13, 1577376), (16, 1281618), (18, 1139216), (24, 854412), (26, 788688), (32, 640809), (36, 569608), (39, 525792), (48, 427206), (52, 394344), (72, 284804), (78, 262896), (96, 213603), (104, 197172), (117, 175264), (144, 142402), (156, 131448), (208, 98586), (234, 87632), (288, 71201), (312, 65724), (416, 49293), (468, 43816), (624, 32862), (936, 21908), (1248, 16431), (1872, 10954), (3744, 5477)]