20784204

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{67}}^1\times {\mathrm{1231}}^1$

素因数の和:1315

約数の個数: 72

約数和(自身を含む): 60988928

約数和(自身を除く): 40204724

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 63, 67, 84, 126, 134, 201, 252, 268, 402, 469, 603, 804, 938, 1206, 1231, 1407, 1876, 2412, 2462, 2814, 3693, 4221, 4924, 5628, 7386, 8442, 8617, 11079, 14772, 16884, 17234, 22158, 25851, 34468, 44316, 51702, 77553, 82477, 103404, 155106, 164954, 247431, 310212, 329908, 494862, 577339, 742293, 989724, 1154678, 1484586, 1732017, 2309356, 2969172, 3464034, 5196051, 6928068, 10392102, 20784204]

約数ペア:

[(1, 20784204), (2, 10392102), (3, 6928068), (4, 5196051), (6, 3464034), (7, 2969172), (9, 2309356), (12, 1732017), (14, 1484586), (18, 1154678), (21, 989724), (28, 742293), (36, 577339), (42, 494862), (63, 329908), (67, 310212), (84, 247431), (126, 164954), (134, 155106), (201, 103404), (252, 82477), (268, 77553), (402, 51702), (469, 44316), (603, 34468), (804, 25851), (938, 22158), (1206, 17234), (1231, 16884), (1407, 14772), (1876, 11079), (2412, 8617), (2462, 8442), (2814, 7386), (3693, 5628), (4221, 4924)]