21512199

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{269}}^1$

素因数の和:375

約数の個数: 32

約数和(自身を含む): 32140800

約数和(自身を除く): 10628601

約数列:

[1, 3, 19, 23, 57, 61, 69, 183, 269, 437, 807, 1159, 1311, 1403, 3477, 4209, 5111, 6187, 15333, 16409, 18561, 26657, 49227, 79971, 117553, 311771, 352659, 377407, 935313, 1132221, 7170733, 21512199]

約数ペア:

[(1, 21512199), (3, 7170733), (19, 1132221), (23, 935313), (57, 377407), (61, 352659), (69, 311771), (183, 117553), (269, 79971), (437, 49227), (807, 26657), (1159, 18561), (1311, 16409), (1403, 15333), (3477, 6187), (4209, 5111)]