18086860

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{4327}}^1$

素因数の和:4366

約数の個数: 48

約数和(自身を含む): 43626240

約数和(自身を除く): 25539380

約数列:

[1, 2, 4, 5, 10, 11, 19, 20, 22, 38, 44, 55, 76, 95, 110, 190, 209, 220, 380, 418, 836, 1045, 2090, 4180, 4327, 8654, 17308, 21635, 43270, 47597, 82213, 86540, 95194, 164426, 190388, 237985, 328852, 411065, 475970, 822130, 904343, 951940, 1644260, 1808686, 3617372, 4521715, 9043430, 18086860]

約数ペア:

[(1, 18086860), (2, 9043430), (4, 4521715), (5, 3617372), (10, 1808686), (11, 1644260), (19, 951940), (20, 904343), (22, 822130), (38, 475970), (44, 411065), (55, 328852), (76, 237985), (95, 190388), (110, 164426), (190, 95194), (209, 86540), (220, 82213), (380, 47597), (418, 43270), (836, 21635), (1045, 17308), (2090, 8654), (4180, 4327)]