21588908

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{89}}^1\times {\mathrm{149}}^1$

素因数の和:290

約数の個数: 48

約数和(自身を含む): 43092000

約数和(自身を除く): 21503092

約数列:

[1, 2, 4, 11, 22, 37, 44, 74, 89, 148, 149, 178, 298, 356, 407, 596, 814, 979, 1628, 1639, 1958, 3278, 3293, 3916, 5513, 6556, 6586, 11026, 13172, 13261, 22052, 26522, 36223, 53044, 60643, 72446, 121286, 144892, 145871, 242572, 291742, 490657, 583484, 981314, 1962628, 5397227, 10794454, 21588908]

約数ペア:

[(1, 21588908), (2, 10794454), (4, 5397227), (11, 1962628), (22, 981314), (37, 583484), (44, 490657), (74, 291742), (89, 242572), (148, 145871), (149, 144892), (178, 121286), (298, 72446), (356, 60643), (407, 53044), (596, 36223), (814, 26522), (979, 22052), (1628, 13261), (1639, 13172), (1958, 11026), (3278, 6586), (3293, 6556), (3916, 5513)]