21106305

素因数分解:

$3^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{233}}^1$

素因数の和:319

約数の個数: 64

約数和(自身を含む): 41783040

約数和(自身を除く): 20676735

約数列:

[1, 3, 5, 9, 11, 15, 27, 33, 45, 55, 61, 99, 135, 165, 183, 233, 297, 305, 495, 549, 671, 699, 915, 1165, 1485, 1647, 2013, 2097, 2563, 2745, 3355, 3495, 6039, 6291, 7689, 8235, 10065, 10485, 12815, 14213, 18117, 23067, 30195, 31455, 38445, 42639, 69201, 71065, 90585, 115335, 127917, 156343, 213195, 346005, 383751, 469029, 639585, 781715, 1407087, 1918755, 2345145, 4221261, 7035435, 21106305]

約数ペア:

[(1, 21106305), (3, 7035435), (5, 4221261), (9, 2345145), (11, 1918755), (15, 1407087), (27, 781715), (33, 639585), (45, 469029), (55, 383751), (61, 346005), (99, 213195), (135, 156343), (165, 127917), (183, 115335), (233, 90585), (297, 71065), (305, 69201), (495, 42639), (549, 38445), (671, 31455), (699, 30195), (915, 23067), (1165, 18117), (1485, 14213), (1647, 12815), (2013, 10485), (2097, 10065), (2563, 8235), (2745, 7689), (3355, 6291), (3495, 6039)]