21371511

素因数分解:

$3^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{59}}^1\times {\mathrm{367}}^1$

素因数の和:483

約数の個数: 32

約数和(自身を含む): 33914880

約数和(自身を除く): 12543369

約数列:

[1, 3, 7, 21, 47, 59, 141, 177, 329, 367, 413, 987, 1101, 1239, 2569, 2773, 7707, 8319, 17249, 19411, 21653, 51747, 58233, 64959, 120743, 151571, 362229, 454713, 1017691, 3053073, 7123837, 21371511]

約数ペア:

[(1, 21371511), (3, 7123837), (7, 3053073), (21, 1017691), (47, 454713), (59, 362229), (141, 151571), (177, 120743), (329, 64959), (367, 58233), (413, 51747), (987, 21653), (1101, 19411), (1239, 17249), (2569, 8319), (2773, 7707)]