21364239

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{431}}^1$

素因数の和:519

約数の個数: 32

約数和(自身を含む): 32514048

約数和(自身を除く): 11149809

約数列:

[1, 3, 13, 31, 39, 41, 93, 123, 403, 431, 533, 1209, 1271, 1293, 1599, 3813, 5603, 13361, 16523, 16809, 17671, 40083, 49569, 53013, 173693, 229723, 521079, 547801, 689169, 1643403, 7121413, 21364239]

約数ペア:

[(1, 21364239), (3, 7121413), (13, 1643403), (31, 689169), (39, 547801), (41, 521079), (93, 229723), (123, 173693), (403, 53013), (431, 49569), (533, 40083), (1209, 17671), (1271, 16809), (1293, 16523), (1599, 13361), (3813, 5603)]