21459256

素因数分解:

$2^3\times 7^2\times {\mathrm{13}}^1\times {\mathrm{4211}}^1$

素因数の和:4244

約数の個数: 48

約数和(自身を含む): 50417640

約数和(自身を除く): 28958384

約数列:

[1, 2, 4, 7, 8, 13, 14, 26, 28, 49, 52, 56, 91, 98, 104, 182, 196, 364, 392, 637, 728, 1274, 2548, 4211, 5096, 8422, 16844, 29477, 33688, 54743, 58954, 109486, 117908, 206339, 218972, 235816, 383201, 412678, 437944, 766402, 825356, 1532804, 1650712, 2682407, 3065608, 5364814, 10729628, 21459256]

約数ペア:

[(1, 21459256), (2, 10729628), (4, 5364814), (7, 3065608), (8, 2682407), (13, 1650712), (14, 1532804), (26, 825356), (28, 766402), (49, 437944), (52, 412678), (56, 383201), (91, 235816), (98, 218972), (104, 206339), (182, 117908), (196, 109486), (364, 58954), (392, 54743), (637, 33688), (728, 29477), (1274, 16844), (2548, 8422), (4211, 5096)]