19937060

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{6971}}^1$

素因数の和:7004

約数の個数: 48

約数和(自身を含む): 49194432

約数和(自身を除く): 29257372

約数列:

[1, 2, 4, 5, 10, 11, 13, 20, 22, 26, 44, 52, 55, 65, 110, 130, 143, 220, 260, 286, 572, 715, 1430, 2860, 6971, 13942, 27884, 34855, 69710, 76681, 90623, 139420, 153362, 181246, 306724, 362492, 383405, 453115, 766810, 906230, 996853, 1533620, 1812460, 1993706, 3987412, 4984265, 9968530, 19937060]

約数ペア:

[(1, 19937060), (2, 9968530), (4, 4984265), (5, 3987412), (10, 1993706), (11, 1812460), (13, 1533620), (20, 996853), (22, 906230), (26, 766810), (44, 453115), (52, 383405), (55, 362492), (65, 306724), (110, 181246), (130, 153362), (143, 139420), (220, 90623), (260, 76681), (286, 69710), (572, 34855), (715, 27884), (1430, 13942), (2860, 6971)]