21448245

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{827}}^1$

素因数の和:874

約数の個数: 64

約数和(自身を含む): 44513280

約数和(自身を除く): 23065035

約数列:

[1, 3, 5, 7, 13, 15, 19, 21, 35, 39, 57, 65, 91, 95, 105, 133, 195, 247, 273, 285, 399, 455, 665, 741, 827, 1235, 1365, 1729, 1995, 2481, 3705, 4135, 5187, 5789, 8645, 10751, 12405, 15713, 17367, 25935, 28945, 32253, 47139, 53755, 75257, 78565, 86835, 109991, 161265, 204269, 225771, 235695, 329973, 376285, 549955, 612807, 1021345, 1128855, 1429883, 1649865, 3064035, 4289649, 7149415, 21448245]

約数ペア:

[(1, 21448245), (3, 7149415), (5, 4289649), (7, 3064035), (13, 1649865), (15, 1429883), (19, 1128855), (21, 1021345), (35, 612807), (39, 549955), (57, 376285), (65, 329973), (91, 235695), (95, 225771), (105, 204269), (133, 161265), (195, 109991), (247, 86835), (273, 78565), (285, 75257), (399, 53755), (455, 47139), (665, 32253), (741, 28945), (827, 25935), (1235, 17367), (1365, 15713), (1729, 12405), (1995, 10751), (2481, 8645), (3705, 5789), (4135, 5187)]