17918985

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{3631}}^1$

素因数の和:3693

約数の個数: 32

約数和(自身を含む): 33472512

約数和(自身を除く): 15553527

約数列:

[1, 3, 5, 7, 15, 21, 35, 47, 105, 141, 235, 329, 705, 987, 1645, 3631, 4935, 10893, 18155, 25417, 54465, 76251, 127085, 170657, 381255, 511971, 853285, 1194599, 2559855, 3583797, 5972995, 17918985]

約数ペア:

[(1, 17918985), (3, 5972995), (5, 3583797), (7, 2559855), (15, 1194599), (21, 853285), (35, 511971), (47, 381255), (105, 170657), (141, 127085), (235, 76251), (329, 54465), (705, 25417), (987, 18155), (1645, 10893), (3631, 4935)]