20696390

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{353}}^1$

素因数の和:425

約数の個数: 64

約数和(自身を含む): 44960832

約数和(自身を除く): 24264442

約数列:

[1, 2, 5, 10, 11, 13, 22, 26, 41, 55, 65, 82, 110, 130, 143, 205, 286, 353, 410, 451, 533, 706, 715, 902, 1066, 1430, 1765, 2255, 2665, 3530, 3883, 4510, 4589, 5330, 5863, 7766, 9178, 11726, 14473, 19415, 22945, 28946, 29315, 38830, 45890, 50479, 58630, 72365, 100958, 144730, 159203, 188149, 252395, 318406, 376298, 504790, 796015, 940745, 1592030, 1881490, 2069639, 4139278, 10348195, 20696390]

約数ペア:

[(1, 20696390), (2, 10348195), (5, 4139278), (10, 2069639), (11, 1881490), (13, 1592030), (22, 940745), (26, 796015), (41, 504790), (55, 376298), (65, 318406), (82, 252395), (110, 188149), (130, 159203), (143, 144730), (205, 100958), (286, 72365), (353, 58630), (410, 50479), (451, 45890), (533, 38830), (706, 29315), (715, 28946), (902, 22945), (1066, 19415), (1430, 14473), (1765, 11726), (2255, 9178), (2665, 7766), (3530, 5863), (3883, 5330), (4510, 4589)]