20195455

素因数分解:

$5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{101}}^1\times {\mathrm{197}}^1$

素因数の和:339

約数の個数: 32

約数和(自身を含む): 29082240

約数和(自身を除く): 8886785

約数列:

[1, 5, 7, 29, 35, 101, 145, 197, 203, 505, 707, 985, 1015, 1379, 2929, 3535, 5713, 6895, 14645, 19897, 20503, 28565, 39991, 99485, 102515, 139279, 199955, 577013, 696395, 2885065, 4039091, 20195455]

約数ペア:

[(1, 20195455), (5, 4039091), (7, 2885065), (29, 696395), (35, 577013), (101, 199955), (145, 139279), (197, 102515), (203, 99485), (505, 39991), (707, 28565), (985, 20503), (1015, 19897), (1379, 14645), (2929, 6895), (3535, 5713)]