18201715

素因数分解:

$5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{101}}^1\times {\mathrm{271}}^1$

素因数の和:403

約数の個数: 32

約数和(自身を含む): 26634240

約数和(自身を除く): 8432525

約数列:

[1, 5, 7, 19, 35, 95, 101, 133, 271, 505, 665, 707, 1355, 1897, 1919, 3535, 5149, 9485, 9595, 13433, 25745, 27371, 36043, 67165, 136855, 180215, 191597, 520049, 957985, 2600245, 3640343, 18201715]

約数ペア:

[(1, 18201715), (5, 3640343), (7, 2600245), (19, 957985), (35, 520049), (95, 191597), (101, 180215), (133, 136855), (271, 67165), (505, 36043), (665, 27371), (707, 25745), (1355, 13433), (1897, 9595), (1919, 9485), (3535, 5149)]