21245154

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{79}}^1\times {\mathrm{337}}^1$

素因数の和:447

約数の個数: 64

約数和(自身を含む): 51916800

約数和(自身を除く): 30671646

約数列:

[1, 2, 3, 6, 7, 14, 19, 21, 38, 42, 57, 79, 114, 133, 158, 237, 266, 337, 399, 474, 553, 674, 798, 1011, 1106, 1501, 1659, 2022, 2359, 3002, 3318, 4503, 4718, 6403, 7077, 9006, 10507, 12806, 14154, 19209, 21014, 26623, 31521, 38418, 44821, 53246, 63042, 79869, 89642, 134463, 159738, 186361, 268926, 372722, 505837, 559083, 1011674, 1118166, 1517511, 3035022, 3540859, 7081718, 10622577, 21245154]

約数ペア:

[(1, 21245154), (2, 10622577), (3, 7081718), (6, 3540859), (7, 3035022), (14, 1517511), (19, 1118166), (21, 1011674), (38, 559083), (42, 505837), (57, 372722), (79, 268926), (114, 186361), (133, 159738), (158, 134463), (237, 89642), (266, 79869), (337, 63042), (399, 53246), (474, 44821), (553, 38418), (674, 31521), (798, 26623), (1011, 21014), (1106, 19209), (1501, 14154), (1659, 12806), (2022, 10507), (2359, 9006), (3002, 7077), (3318, 6403), (4503, 4718)]