21987435

素因数分解:

$3^1\times 5^1\times {\mathrm{37}}^1\times {\mathrm{173}}^1\times {\mathrm{229}}^1$

素因数の和:447

約数の個数: 32

約数和(自身を含む): 36498240

約数和(自身を除く): 14510805

約数列:

[1, 3, 5, 15, 37, 111, 173, 185, 229, 519, 555, 687, 865, 1145, 2595, 3435, 6401, 8473, 19203, 25419, 32005, 39617, 42365, 96015, 118851, 127095, 198085, 594255, 1465829, 4397487, 7329145, 21987435]

約数ペア:

[(1, 21987435), (3, 7329145), (5, 4397487), (15, 1465829), (37, 594255), (111, 198085), (173, 127095), (185, 118851), (229, 96015), (519, 42365), (555, 39617), (687, 32005), (865, 25419), (1145, 19203), (2595, 8473), (3435, 6401)]