20521908

素因数分解:

$2^2\times 3^2\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{1787}}^1$

素因数の和:1837

約数の個数: 72

約数和(自身を含む): 58574880

約数和(自身を除く): 38052972

約数列:

[1, 2, 3, 4, 6, 9, 11, 12, 18, 22, 29, 33, 36, 44, 58, 66, 87, 99, 116, 132, 174, 198, 261, 319, 348, 396, 522, 638, 957, 1044, 1276, 1787, 1914, 2871, 3574, 3828, 5361, 5742, 7148, 10722, 11484, 16083, 19657, 21444, 32166, 39314, 51823, 58971, 64332, 78628, 103646, 117942, 155469, 176913, 207292, 235884, 310938, 353826, 466407, 570053, 621876, 707652, 932814, 1140106, 1710159, 1865628, 2280212, 3420318, 5130477, 6840636, 10260954, 20521908]

約数ペア:

[(1, 20521908), (2, 10260954), (3, 6840636), (4, 5130477), (6, 3420318), (9, 2280212), (11, 1865628), (12, 1710159), (18, 1140106), (22, 932814), (29, 707652), (33, 621876), (36, 570053), (44, 466407), (58, 353826), (66, 310938), (87, 235884), (99, 207292), (116, 176913), (132, 155469), (174, 117942), (198, 103646), (261, 78628), (319, 64332), (348, 58971), (396, 51823), (522, 39314), (638, 32166), (957, 21444), (1044, 19657), (1276, 16083), (1787, 11484), (1914, 10722), (2871, 7148), (3574, 5742), (3828, 5361)]