81895855

素因数分解:

$5^1\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{61}}^1\times {\mathrm{197}}^1$

素因数の和:339

約数の個数: 32

約数和(自身を含む): 106064640

約数和(自身を除く): 24168785

約数列:

[1, 5, 29, 47, 61, 145, 197, 235, 305, 985, 1363, 1769, 2867, 5713, 6815, 8845, 9259, 12017, 14335, 28565, 46295, 60085, 83143, 268511, 348493, 415715, 564799, 1342555, 1742465, 2823995, 16379171, 81895855]

約数ペア:

[(1, 81895855), (5, 16379171), (29, 2823995), (47, 1742465), (61, 1342555), (145, 564799), (197, 415715), (235, 348493), (305, 268511), (985, 83143), (1363, 60085), (1769, 46295), (2867, 28565), (5713, 14335), (6815, 12017), (8845, 9259)]