213017905

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{103}}^1\times {\mathrm{839}}^1$

素因数の和:993

約数の個数: 32

約数和(自身を含む): 283046400

約数和(自身を除く): 70028495

約数列:

[1, 5, 17, 29, 85, 103, 145, 493, 515, 839, 1751, 2465, 2987, 4195, 8755, 14263, 14935, 24331, 50779, 71315, 86417, 121655, 253895, 413627, 432085, 1469089, 2068135, 2506093, 7345445, 12530465, 42603581, 213017905]

約数ペア:

[(1, 213017905), (5, 42603581), (17, 12530465), (29, 7345445), (85, 2506093), (103, 2068135), (145, 1469089), (493, 432085), (515, 413627), (839, 253895), (1751, 121655), (2465, 86417), (2987, 71315), (4195, 50779), (8755, 24331), (14263, 14935)]