20211435

素因数分解:

$3^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{61}}^1\times {\mathrm{199}}^1$

素因数の和:308

約数の個数: 48

約数和(自身を含む): 36753600

約数和(自身を除く): 16542165

約数列:

[1, 3, 5, 9, 15, 37, 45, 61, 111, 183, 185, 199, 305, 333, 549, 555, 597, 915, 995, 1665, 1791, 2257, 2745, 2985, 6771, 7363, 8955, 11285, 12139, 20313, 22089, 33855, 36417, 36815, 60695, 66267, 101565, 109251, 110445, 182085, 331335, 449143, 546255, 1347429, 2245715, 4042287, 6737145, 20211435]

約数ペア:

[(1, 20211435), (3, 6737145), (5, 4042287), (9, 2245715), (15, 1347429), (37, 546255), (45, 449143), (61, 331335), (111, 182085), (183, 110445), (185, 109251), (199, 101565), (305, 66267), (333, 60695), (549, 36815), (555, 36417), (597, 33855), (915, 22089), (995, 20313), (1665, 12139), (1791, 11285), (2257, 8955), (2745, 7363), (2985, 6771)]