21122145

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{601}}^1$

素因数の和:694

約数の個数: 48

約数和(自身を含む): 40569984

約数和(自身を除く): 19447839

約数列:

[1, 3, 5, 9, 11, 15, 33, 45, 55, 71, 99, 165, 213, 355, 495, 601, 639, 781, 1065, 1803, 2343, 3005, 3195, 3905, 5409, 6611, 7029, 9015, 11715, 19833, 27045, 33055, 35145, 42671, 59499, 99165, 128013, 213355, 297495, 384039, 469381, 640065, 1408143, 1920195, 2346905, 4224429, 7040715, 21122145]

約数ペア:

[(1, 21122145), (3, 7040715), (5, 4224429), (9, 2346905), (11, 1920195), (15, 1408143), (33, 640065), (45, 469381), (55, 384039), (71, 297495), (99, 213355), (165, 128013), (213, 99165), (355, 59499), (495, 42671), (601, 35145), (639, 33055), (781, 27045), (1065, 19833), (1803, 11715), (2343, 9015), (3005, 7029), (3195, 6611), (3905, 5409)]