21535514

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{347}}^1$

素因数の和:411

約数の個数: 64

約数和(自身を含む): 44900352

約数和(自身を除く): 23364838

約数列:

[1, 2, 7, 11, 13, 14, 22, 26, 31, 62, 77, 91, 143, 154, 182, 217, 286, 341, 347, 403, 434, 682, 694, 806, 1001, 2002, 2387, 2429, 2821, 3817, 4433, 4511, 4774, 4858, 5642, 7634, 8866, 9022, 10757, 21514, 26719, 31031, 31577, 49621, 53438, 62062, 63154, 75299, 99242, 118327, 139841, 150598, 236654, 279682, 347347, 694694, 828289, 978887, 1538251, 1656578, 1957774, 3076502, 10767757, 21535514]

約数ペア:

[(1, 21535514), (2, 10767757), (7, 3076502), (11, 1957774), (13, 1656578), (14, 1538251), (22, 978887), (26, 828289), (31, 694694), (62, 347347), (77, 279682), (91, 236654), (143, 150598), (154, 139841), (182, 118327), (217, 99242), (286, 75299), (341, 63154), (347, 62062), (403, 53438), (434, 49621), (682, 31577), (694, 31031), (806, 26719), (1001, 21514), (2002, 10757), (2387, 9022), (2429, 8866), (2821, 7634), (3817, 5642), (4433, 4858), (4511, 4774)]