21720110

素因数分解:

$2^1\times 5^1\times {\mathrm{37}}^1\times {\mathrm{47}}^1\times {\mathrm{1249}}^1$

素因数の和:1340

約数の個数: 32

約数和(自身を含む): 41040000

約数和(自身を除く): 19319890

約数列:

[1, 2, 5, 10, 37, 47, 74, 94, 185, 235, 370, 470, 1249, 1739, 2498, 3478, 6245, 8695, 12490, 17390, 46213, 58703, 92426, 117406, 231065, 293515, 462130, 587030, 2172011, 4344022, 10860055, 21720110]

約数ペア:

[(1, 21720110), (2, 10860055), (5, 4344022), (10, 2172011), (37, 587030), (47, 462130), (74, 293515), (94, 231065), (185, 117406), (235, 92426), (370, 58703), (470, 46213), (1249, 17390), (1739, 12490), (2498, 8695), (3478, 6245)]