21508396

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{1597}}^1$

素因数の和:1658

約数の個数: 48

約数和(自身を含む): 47607616

約数和(自身を除く): 26099220

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 37, 52, 74, 91, 148, 182, 259, 364, 481, 518, 962, 1036, 1597, 1924, 3194, 3367, 6388, 6734, 11179, 13468, 20761, 22358, 41522, 44716, 59089, 83044, 118178, 145327, 236356, 290654, 413623, 581308, 768157, 827246, 1536314, 1654492, 3072628, 5377099, 10754198, 21508396]

約数ペア:

[(1, 21508396), (2, 10754198), (4, 5377099), (7, 3072628), (13, 1654492), (14, 1536314), (26, 827246), (28, 768157), (37, 581308), (52, 413623), (74, 290654), (91, 236356), (148, 145327), (182, 118178), (259, 83044), (364, 59089), (481, 44716), (518, 41522), (962, 22358), (1036, 20761), (1597, 13468), (1924, 11179), (3194, 6734), (3367, 6388)]