28387485

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{227}}^1\times {\mathrm{397}}^1$

素因数の和:642

約数の個数: 48

約数和(自身を含む): 56624256

約数和(自身を除く): 28236771

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 105, 227, 315, 397, 681, 1135, 1191, 1589, 1985, 2043, 2779, 3405, 3573, 4767, 5955, 7945, 8337, 10215, 13895, 14301, 17865, 23835, 25011, 41685, 71505, 90119, 125055, 270357, 450595, 630833, 811071, 1351785, 1892499, 3154165, 4055355, 5677497, 9462495, 28387485]

約数ペア:

[(1, 28387485), (3, 9462495), (5, 5677497), (7, 4055355), (9, 3154165), (15, 1892499), (21, 1351785), (35, 811071), (45, 630833), (63, 450595), (105, 270357), (227, 125055), (315, 90119), (397, 71505), (681, 41685), (1135, 25011), (1191, 23835), (1589, 17865), (1985, 14301), (2043, 13895), (2779, 10215), (3405, 8337), (3573, 7945), (4767, 5955)]