21651435

素因数分解:

$3^3\times 5^1\times {\mathrm{13}}^3\times {\mathrm{73}}^1$

素因数の和:126

約数の個数: 64

約数和(自身を含む): 42268800

約数和(自身を除く): 20617365

約数列:

[1, 3, 5, 9, 13, 15, 27, 39, 45, 65, 73, 117, 135, 169, 195, 219, 351, 365, 507, 585, 657, 845, 949, 1095, 1521, 1755, 1971, 2197, 2535, 2847, 3285, 4563, 4745, 6591, 7605, 8541, 9855, 10985, 12337, 14235, 19773, 22815, 25623, 32955, 37011, 42705, 59319, 61685, 98865, 111033, 128115, 160381, 185055, 296595, 333099, 481143, 555165, 801905, 1443429, 1665495, 2405715, 4330287, 7217145, 21651435]

約数ペア:

[(1, 21651435), (3, 7217145), (5, 4330287), (9, 2405715), (13, 1665495), (15, 1443429), (27, 801905), (39, 555165), (45, 481143), (65, 333099), (73, 296595), (117, 185055), (135, 160381), (169, 128115), (195, 111033), (219, 98865), (351, 61685), (365, 59319), (507, 42705), (585, 37011), (657, 32955), (845, 25623), (949, 22815), (1095, 19773), (1521, 14235), (1755, 12337), (1971, 10985), (2197, 9855), (2535, 8541), (2847, 7605), (3285, 6591), (4563, 4745)]