21111470

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{4831}}^1$

素因数の和:4880

約数の個数: 32

約数和(自身を含む): 41748480

約数和(自身を除く): 20637010

約数列:

[1, 2, 5, 10, 19, 23, 38, 46, 95, 115, 190, 230, 437, 874, 2185, 4370, 4831, 9662, 24155, 48310, 91789, 111113, 183578, 222226, 458945, 555565, 917890, 1111130, 2111147, 4222294, 10555735, 21111470]

約数ペア:

[(1, 21111470), (2, 10555735), (5, 4222294), (10, 2111147), (19, 1111130), (23, 917890), (38, 555565), (46, 458945), (95, 222226), (115, 183578), (190, 111113), (230, 91789), (437, 48310), (874, 24155), (2185, 9662), (4370, 4831)]