138897405

素因数分解:

$3^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{89}}^1\times {\mathrm{439}}^1$

素因数の和:618

約数の個数: 48

約数和(自身を含む): 247104000

約数和(自身を除く): 108206595

約数列:

[1, 3, 5, 9, 15, 45, 79, 89, 237, 267, 395, 439, 445, 711, 801, 1185, 1317, 1335, 2195, 3555, 3951, 4005, 6585, 7031, 19755, 21093, 34681, 35155, 39071, 63279, 104043, 105465, 117213, 173405, 195355, 312129, 316395, 351639, 520215, 586065, 1560645, 1758195, 3086609, 9259827, 15433045, 27779481, 46299135, 138897405]

約数ペア:

[(1, 138897405), (3, 46299135), (5, 27779481), (9, 15433045), (15, 9259827), (45, 3086609), (79, 1758195), (89, 1560645), (237, 586065), (267, 520215), (395, 351639), (439, 316395), (445, 312129), (711, 195355), (801, 173405), (1185, 117213), (1317, 105465), (1335, 104043), (2195, 63279), (3555, 39071), (3951, 35155), (4005, 34681), (6585, 21093), (7031, 19755)]