20351685

素因数分解:

$3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{139}}^1\times {\mathrm{227}}^1$

素因数の和:417

約数の個数: 32

約数和(自身を含む): 33707520

約数和(自身を除く): 13355835

約数列:

[1, 3, 5, 15, 43, 129, 139, 215, 227, 417, 645, 681, 695, 1135, 2085, 3405, 5977, 9761, 17931, 29283, 29885, 31553, 48805, 89655, 94659, 146415, 157765, 473295, 1356779, 4070337, 6783895, 20351685]

約数ペア:

[(1, 20351685), (3, 6783895), (5, 4070337), (15, 1356779), (43, 473295), (129, 157765), (139, 146415), (215, 94659), (227, 89655), (417, 48805), (645, 31553), (681, 29885), (695, 29283), (1135, 17931), (2085, 9761), (3405, 5977)]