21961290

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{56311}}^1$

素因数の和:56334

約数の個数: 32

約数和(自身を含む): 56762496

約数和(自身を除く): 34801206

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390, 56311, 112622, 168933, 281555, 337866, 563110, 732043, 844665, 1464086, 1689330, 2196129, 3660215, 4392258, 7320430, 10980645, 21961290]

約数ペア:

[(1, 21961290), (2, 10980645), (3, 7320430), (5, 4392258), (6, 3660215), (10, 2196129), (13, 1689330), (15, 1464086), (26, 844665), (30, 732043), (39, 563110), (65, 337866), (78, 281555), (130, 168933), (195, 112622), (390, 56311)]