21122528

素因数分解:

$2^5\times 7^2\times {\mathrm{19}}^1\times {\mathrm{709}}^1$

素因数の和:752

約数の個数: 72

約数和(自身を含む): 50992200

約数和(自身を除く): 29869672

約数列:

[1, 2, 4, 7, 8, 14, 16, 19, 28, 32, 38, 49, 56, 76, 98, 112, 133, 152, 196, 224, 266, 304, 392, 532, 608, 709, 784, 931, 1064, 1418, 1568, 1862, 2128, 2836, 3724, 4256, 4963, 5672, 7448, 9926, 11344, 13471, 14896, 19852, 22688, 26942, 29792, 34741, 39704, 53884, 69482, 79408, 94297, 107768, 138964, 158816, 188594, 215536, 277928, 377188, 431072, 555856, 660079, 754376, 1111712, 1320158, 1508752, 2640316, 3017504, 5280632, 10561264, 21122528]

約数ペア:

[(1, 21122528), (2, 10561264), (4, 5280632), (7, 3017504), (8, 2640316), (14, 1508752), (16, 1320158), (19, 1111712), (28, 754376), (32, 660079), (38, 555856), (49, 431072), (56, 377188), (76, 277928), (98, 215536), (112, 188594), (133, 158816), (152, 138964), (196, 107768), (224, 94297), (266, 79408), (304, 69482), (392, 53884), (532, 39704), (608, 34741), (709, 29792), (784, 26942), (931, 22688), (1064, 19852), (1418, 14896), (1568, 13471), (1862, 11344), (2128, 9926), (2836, 7448), (3724, 5672), (4256, 4963)]