21560344

素因数分解:

$2^3\times {\mathrm{13}}^2\times {\mathrm{37}}^1\times {\mathrm{431}}^1$

素因数の和:500

約数の個数: 48

約数和(自身を含む): 45061920

約数和(自身を除く): 23501576

約数列:

[1, 2, 4, 8, 13, 26, 37, 52, 74, 104, 148, 169, 296, 338, 431, 481, 676, 862, 962, 1352, 1724, 1924, 3448, 3848, 5603, 6253, 11206, 12506, 15947, 22412, 25012, 31894, 44824, 50024, 63788, 72839, 127576, 145678, 207311, 291356, 414622, 582712, 829244, 1658488, 2695043, 5390086, 10780172, 21560344]

約数ペア:

[(1, 21560344), (2, 10780172), (4, 5390086), (8, 2695043), (13, 1658488), (26, 829244), (37, 582712), (52, 414622), (74, 291356), (104, 207311), (148, 145678), (169, 127576), (296, 72839), (338, 63788), (431, 50024), (481, 44824), (676, 31894), (862, 25012), (962, 22412), (1352, 15947), (1724, 12506), (1924, 11206), (3448, 6253), (3848, 5603)]