20498790

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{52561}}^1$

素因数の和:52584

約数の個数: 32

約数和(自身を含む): 52982496

約数和(自身を除く): 32483706

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390, 52561, 105122, 157683, 262805, 315366, 525610, 683293, 788415, 1366586, 1576830, 2049879, 3416465, 4099758, 6832930, 10249395, 20498790]

約数ペア:

[(1, 20498790), (2, 10249395), (3, 6832930), (5, 4099758), (6, 3416465), (10, 2049879), (13, 1576830), (15, 1366586), (26, 788415), (30, 683293), (39, 525610), (65, 315366), (78, 262805), (130, 157683), (195, 105122), (390, 52561)]