20401810

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{1297}}^1$

素因数の和:1339

約数の個数: 48

約数和(自身を含む): 43503768

約数和(自身を除く): 23101958

約数列:

[1, 2, 5, 10, 11, 13, 22, 26, 55, 65, 110, 121, 130, 143, 242, 286, 605, 715, 1210, 1297, 1430, 1573, 2594, 3146, 6485, 7865, 12970, 14267, 15730, 16861, 28534, 33722, 71335, 84305, 142670, 156937, 168610, 185471, 313874, 370942, 784685, 927355, 1569370, 1854710, 2040181, 4080362, 10200905, 20401810]

約数ペア:

[(1, 20401810), (2, 10200905), (5, 4080362), (10, 2040181), (11, 1854710), (13, 1569370), (22, 927355), (26, 784685), (55, 370942), (65, 313874), (110, 185471), (121, 168610), (130, 156937), (143, 142670), (242, 84305), (286, 71335), (605, 33722), (715, 28534), (1210, 16861), (1297, 15730), (1430, 14267), (1573, 12970), (2594, 7865), (3146, 6485)]