21097220

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{941}}^1$

素因数の和:1028

約数の個数: 48

約数和(自身を含む): 47476800

約数和(自身を除く): 26379580

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 59, 76, 95, 118, 190, 236, 295, 380, 590, 941, 1121, 1180, 1882, 2242, 3764, 4484, 4705, 5605, 9410, 11210, 17879, 18820, 22420, 35758, 55519, 71516, 89395, 111038, 178790, 222076, 277595, 357580, 555190, 1054861, 1110380, 2109722, 4219444, 5274305, 10548610, 21097220]

約数ペア:

[(1, 21097220), (2, 10548610), (4, 5274305), (5, 4219444), (10, 2109722), (19, 1110380), (20, 1054861), (38, 555190), (59, 357580), (76, 277595), (95, 222076), (118, 178790), (190, 111038), (236, 89395), (295, 71516), (380, 55519), (590, 35758), (941, 22420), (1121, 18820), (1180, 17879), (1882, 11210), (2242, 9410), (3764, 5605), (4484, 4705)]