644130865

素因数分解:

$5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{139}}^1\times {\mathrm{4271}}^1$

素因数の和:4453

約数の個数: 32

約数和(自身を含む): 918650880

約数和(自身を除く): 274520015

約数列:

[1, 5, 7, 31, 35, 139, 155, 217, 695, 973, 1085, 4271, 4309, 4865, 21355, 21545, 29897, 30163, 132401, 149485, 150815, 593669, 662005, 926807, 2968345, 4155683, 4634035, 18403739, 20778415, 92018695, 128826173, 644130865]

約数ペア:

[(1, 644130865), (5, 128826173), (7, 92018695), (31, 20778415), (35, 18403739), (139, 4634035), (155, 4155683), (217, 2968345), (695, 926807), (973, 662005), (1085, 593669), (4271, 150815), (4309, 149485), (4865, 132401), (21355, 30163), (21545, 29897)]