20565610

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{43}}^1\times {\mathrm{283}}^1$

素因数の和:359

約数の個数: 48

約数和(自身を含む): 41161824

約数和(自身を除く): 20596214

約数列:

[1, 2, 5, 10, 13, 26, 43, 65, 86, 130, 169, 215, 283, 338, 430, 559, 566, 845, 1118, 1415, 1690, 2795, 2830, 3679, 5590, 7267, 7358, 12169, 14534, 18395, 24338, 36335, 36790, 47827, 60845, 72670, 95654, 121690, 158197, 239135, 316394, 478270, 790985, 1581970, 2056561, 4113122, 10282805, 20565610]

約数ペア:

[(1, 20565610), (2, 10282805), (5, 4113122), (10, 2056561), (13, 1581970), (26, 790985), (43, 478270), (65, 316394), (86, 239135), (130, 158197), (169, 121690), (215, 95654), (283, 72670), (338, 60845), (430, 47827), (559, 36790), (566, 36335), (845, 24338), (1118, 18395), (1415, 14534), (1690, 12169), (2795, 7358), (2830, 7267), (3679, 5590)]