21005088

素因数分解:

$2^5\times 3^1\times {\mathrm{13}}^1\times {\mathrm{16831}}^1$

素因数の和:16857

約数の個数: 48

約数和(自身を含む): 59383296

約数和(自身を除く): 38378208

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 16, 24, 26, 32, 39, 48, 52, 78, 96, 104, 156, 208, 312, 416, 624, 1248, 16831, 33662, 50493, 67324, 100986, 134648, 201972, 218803, 269296, 403944, 437606, 538592, 656409, 807888, 875212, 1312818, 1615776, 1750424, 2625636, 3500848, 5251272, 7001696, 10502544, 21005088]

約数ペア:

[(1, 21005088), (2, 10502544), (3, 7001696), (4, 5251272), (6, 3500848), (8, 2625636), (12, 1750424), (13, 1615776), (16, 1312818), (24, 875212), (26, 807888), (32, 656409), (39, 538592), (48, 437606), (52, 403944), (78, 269296), (96, 218803), (104, 201972), (156, 134648), (208, 100986), (312, 67324), (416, 50493), (624, 33662), (1248, 16831)]