20491464

素因数分解:

$2^3\times 3^1\times 7^1\times {\mathrm{283}}^1\times {\mathrm{431}}^1$

素因数の和:730

約数の個数: 64

約数和(自身を含む): 58890240

約数和(自身を除く): 38398776

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 21, 24, 28, 42, 56, 84, 168, 283, 431, 566, 849, 862, 1132, 1293, 1698, 1724, 1981, 2264, 2586, 3017, 3396, 3448, 3962, 5172, 5943, 6034, 6792, 7924, 9051, 10344, 11886, 12068, 15848, 18102, 23772, 24136, 36204, 47544, 72408, 121973, 243946, 365919, 487892, 731838, 853811, 975784, 1463676, 1707622, 2561433, 2927352, 3415244, 5122866, 6830488, 10245732, 20491464]

約数ペア:

[(1, 20491464), (2, 10245732), (3, 6830488), (4, 5122866), (6, 3415244), (7, 2927352), (8, 2561433), (12, 1707622), (14, 1463676), (21, 975784), (24, 853811), (28, 731838), (42, 487892), (56, 365919), (84, 243946), (168, 121973), (283, 72408), (431, 47544), (566, 36204), (849, 24136), (862, 23772), (1132, 18102), (1293, 15848), (1698, 12068), (1724, 11886), (1981, 10344), (2264, 9051), (2586, 7924), (3017, 6792), (3396, 6034), (3448, 5943), (3962, 5172)]