21328248

素因数分解:

$2^3\times 3^1\times {\mathrm{31}}^1\times {\mathrm{109}}^1\times {\mathrm{263}}^1$

素因数の和:412

約数の個数: 64

約数和(自身を含む): 55756800

約数和(自身を除く): 34428552

約数列:

[1, 2, 3, 4, 6, 8, 12, 24, 31, 62, 93, 109, 124, 186, 218, 248, 263, 327, 372, 436, 526, 654, 744, 789, 872, 1052, 1308, 1578, 2104, 2616, 3156, 3379, 6312, 6758, 8153, 10137, 13516, 16306, 20274, 24459, 27032, 28667, 32612, 40548, 48918, 57334, 65224, 81096, 86001, 97836, 114668, 172002, 195672, 229336, 344004, 688008, 888677, 1777354, 2666031, 3554708, 5332062, 7109416, 10664124, 21328248]

約数ペア:

[(1, 21328248), (2, 10664124), (3, 7109416), (4, 5332062), (6, 3554708), (8, 2666031), (12, 1777354), (24, 888677), (31, 688008), (62, 344004), (93, 229336), (109, 195672), (124, 172002), (186, 114668), (218, 97836), (248, 86001), (263, 81096), (327, 65224), (372, 57334), (436, 48918), (526, 40548), (654, 32612), (744, 28667), (789, 27032), (872, 24459), (1052, 20274), (1308, 16306), (1578, 13516), (2104, 10137), (2616, 8153), (3156, 6758), (3379, 6312)]