22720257

素因数分解:

$3^5\times 7^1\times {\mathrm{19}}^2\times {\mathrm{37}}^1$

素因数の和:97

約数の個数: 72

約数和(自身を含む): 42159936

約数和(自身を除く): 19439679

約数列:

[1, 3, 7, 9, 19, 21, 27, 37, 57, 63, 81, 111, 133, 171, 189, 243, 259, 333, 361, 399, 513, 567, 703, 777, 999, 1083, 1197, 1539, 1701, 2109, 2331, 2527, 2997, 3249, 3591, 4617, 4921, 6327, 6993, 7581, 8991, 9747, 10773, 13357, 14763, 18981, 20979, 22743, 29241, 32319, 40071, 44289, 56943, 62937, 68229, 87723, 93499, 120213, 132867, 170829, 204687, 280497, 360639, 398601, 614061, 841491, 1081917, 1195803, 2524473, 3245751, 7573419, 22720257]

約数ペア:

[(1, 22720257), (3, 7573419), (7, 3245751), (9, 2524473), (19, 1195803), (21, 1081917), (27, 841491), (37, 614061), (57, 398601), (63, 360639), (81, 280497), (111, 204687), (133, 170829), (171, 132867), (189, 120213), (243, 93499), (259, 87723), (333, 68229), (361, 62937), (399, 56943), (513, 44289), (567, 40071), (703, 32319), (777, 29241), (999, 22743), (1083, 20979), (1197, 18981), (1539, 14763), (1701, 13357), (2109, 10773), (2331, 9747), (2527, 8991), (2997, 7581), (3249, 6993), (3591, 6327), (4617, 4921)]