19723990

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{1061}}^1$

素因数の和:1105

約数の個数: 48

約数和(自身を含む): 41978736

約数和(自身を除く): 22254746

約数列:

[1, 2, 5, 10, 11, 13, 22, 26, 55, 65, 110, 130, 143, 169, 286, 338, 715, 845, 1061, 1430, 1690, 1859, 2122, 3718, 5305, 9295, 10610, 11671, 13793, 18590, 23342, 27586, 58355, 68965, 116710, 137930, 151723, 179309, 303446, 358618, 758615, 896545, 1517230, 1793090, 1972399, 3944798, 9861995, 19723990]

約数ペア:

[(1, 19723990), (2, 9861995), (5, 3944798), (10, 1972399), (11, 1793090), (13, 1517230), (22, 896545), (26, 758615), (55, 358618), (65, 303446), (110, 179309), (130, 151723), (143, 137930), (169, 116710), (286, 68965), (338, 58355), (715, 27586), (845, 23342), (1061, 18590), (1430, 13793), (1690, 11671), (1859, 10610), (2122, 9295), (3718, 5305)]