21891968

素因数分解:

$2^7\times 7^1\times {\mathrm{53}}^1\times {\mathrm{461}}^1$

素因数の和:535

約数の個数: 64

約数和(自身を含む): 50893920

約数和(自身を除く): 29001952

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 53, 56, 64, 106, 112, 128, 212, 224, 371, 424, 448, 461, 742, 848, 896, 922, 1484, 1696, 1844, 2968, 3227, 3392, 3688, 5936, 6454, 6784, 7376, 11872, 12908, 14752, 23744, 24433, 25816, 29504, 47488, 48866, 51632, 59008, 97732, 103264, 171031, 195464, 206528, 342062, 390928, 413056, 684124, 781856, 1368248, 1563712, 2736496, 3127424, 5472992, 10945984, 21891968]

約数ペア:

[(1, 21891968), (2, 10945984), (4, 5472992), (7, 3127424), (8, 2736496), (14, 1563712), (16, 1368248), (28, 781856), (32, 684124), (53, 413056), (56, 390928), (64, 342062), (106, 206528), (112, 195464), (128, 171031), (212, 103264), (224, 97732), (371, 59008), (424, 51632), (448, 48866), (461, 47488), (742, 29504), (848, 25816), (896, 24433), (922, 23744), (1484, 14752), (1696, 12908), (1844, 11872), (2968, 7376), (3227, 6784), (3392, 6454), (3688, 5936)]