21240993

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{61}}^1\times {\mathrm{149}}^1$

素因数の和:273

約数の個数: 32

約数和(自身を含む): 31248000

約数和(自身を除く): 10007007

約数列:

[1, 3, 19, 41, 57, 61, 123, 149, 183, 447, 779, 1159, 2337, 2501, 2831, 3477, 6109, 7503, 8493, 9089, 18327, 27267, 47519, 116071, 142557, 172691, 348213, 372649, 518073, 1117947, 7080331, 21240993]

約数ペア:

[(1, 21240993), (3, 7080331), (19, 1117947), (41, 518073), (57, 372649), (61, 348213), (123, 172691), (149, 142557), (183, 116071), (447, 47519), (779, 27267), (1159, 18327), (2337, 9089), (2501, 8493), (2831, 7503), (3477, 6109)]