21250684

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{739}}^1$

素因数の和:842

約数の個数: 48

約数和(自身を含む): 46412800

約数和(自身を除く): 25162116

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 52, 79, 91, 158, 182, 316, 364, 553, 739, 1027, 1106, 1478, 2054, 2212, 2956, 4108, 5173, 7189, 9607, 10346, 14378, 19214, 20692, 28756, 38428, 58381, 67249, 116762, 134498, 233524, 268996, 408667, 758953, 817334, 1517906, 1634668, 3035812, 5312671, 10625342, 21250684]

約数ペア:

[(1, 21250684), (2, 10625342), (4, 5312671), (7, 3035812), (13, 1634668), (14, 1517906), (26, 817334), (28, 758953), (52, 408667), (79, 268996), (91, 233524), (158, 134498), (182, 116762), (316, 67249), (364, 58381), (553, 38428), (739, 28756), (1027, 20692), (1106, 19214), (1478, 14378), (2054, 10346), (2212, 9607), (2956, 7189), (4108, 5173)]