28421705

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^3\times {\mathrm{89}}^1$

素因数の和:158

約数の個数: 32

約数和(自身を含む): 39463200

約数和(自身を除く): 11041495

約数列:

[1, 5, 13, 17, 65, 85, 89, 221, 289, 445, 1105, 1157, 1445, 1513, 3757, 4913, 5785, 7565, 18785, 19669, 24565, 25721, 63869, 98345, 128605, 319345, 334373, 437257, 1671865, 2186285, 5684341, 28421705]

約数ペア:

[(1, 28421705), (5, 5684341), (13, 2186285), (17, 1671865), (65, 437257), (85, 334373), (89, 319345), (221, 128605), (289, 98345), (445, 63869), (1105, 25721), (1157, 24565), (1445, 19669), (1513, 18785), (3757, 7565), (4913, 5785)]