20995370

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{131}}^1$

素因数の和:227

約数の個数: 64

約数和(自身を含む): 43794432

約数和(自身を除く): 22799062

約数列:

[1, 2, 5, 10, 11, 22, 31, 47, 55, 62, 94, 110, 131, 155, 235, 262, 310, 341, 470, 517, 655, 682, 1034, 1310, 1441, 1457, 1705, 2585, 2882, 2914, 3410, 4061, 5170, 6157, 7205, 7285, 8122, 12314, 14410, 14570, 16027, 20305, 30785, 32054, 40610, 44671, 61570, 67727, 80135, 89342, 135454, 160270, 190867, 223355, 338635, 381734, 446710, 677270, 954335, 1908670, 2099537, 4199074, 10497685, 20995370]

約数ペア:

[(1, 20995370), (2, 10497685), (5, 4199074), (10, 2099537), (11, 1908670), (22, 954335), (31, 677270), (47, 446710), (55, 381734), (62, 338635), (94, 223355), (110, 190867), (131, 160270), (155, 135454), (235, 89342), (262, 80135), (310, 67727), (341, 61570), (470, 44671), (517, 40610), (655, 32054), (682, 30785), (1034, 20305), (1310, 16027), (1441, 14570), (1457, 14410), (1705, 12314), (2585, 8122), (2882, 7285), (2914, 7205), (3410, 6157), (4061, 5170)]