21156590

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{347}}^1$

素因数の和:441

約数の個数: 64

約数和(自身を含む): 47706624

約数和(自身を除く): 26550034

約数列:

[1, 2, 5, 7, 10, 13, 14, 26, 35, 65, 67, 70, 91, 130, 134, 182, 335, 347, 455, 469, 670, 694, 871, 910, 938, 1735, 1742, 2345, 2429, 3470, 4355, 4511, 4690, 4858, 6097, 8710, 9022, 12145, 12194, 22555, 23249, 24290, 30485, 31577, 45110, 46498, 60970, 63154, 116245, 157885, 162743, 232490, 302237, 315770, 325486, 604474, 813715, 1511185, 1627430, 2115659, 3022370, 4231318, 10578295, 21156590]

約数ペア:

[(1, 21156590), (2, 10578295), (5, 4231318), (7, 3022370), (10, 2115659), (13, 1627430), (14, 1511185), (26, 813715), (35, 604474), (65, 325486), (67, 315770), (70, 302237), (91, 232490), (130, 162743), (134, 157885), (182, 116245), (335, 63154), (347, 60970), (455, 46498), (469, 45110), (670, 31577), (694, 30485), (871, 24290), (910, 23249), (938, 22555), (1735, 12194), (1742, 12145), (2345, 9022), (2429, 8710), (3470, 6097), (4355, 4858), (4511, 4690)]