19747420

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{12823}}^1$

素因数の和:12850

約数の個数: 48

約数和(自身を含む): 51706368

約数和(自身を除く): 31958948

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 77, 110, 140, 154, 220, 308, 385, 770, 1540, 12823, 25646, 51292, 64115, 89761, 128230, 141053, 179522, 256460, 282106, 359044, 448805, 564212, 705265, 897610, 987371, 1410530, 1795220, 1974742, 2821060, 3949484, 4936855, 9873710, 19747420]

約数ペア:

[(1, 19747420), (2, 9873710), (4, 4936855), (5, 3949484), (7, 2821060), (10, 1974742), (11, 1795220), (14, 1410530), (20, 987371), (22, 897610), (28, 705265), (35, 564212), (44, 448805), (55, 359044), (70, 282106), (77, 256460), (110, 179522), (140, 141053), (154, 128230), (220, 89761), (308, 64115), (385, 51292), (770, 25646), (1540, 12823)]