21113180

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{5051}}^1$

素因数の和:5090

約数の個数: 48

約数和(自身を含む): 50924160

約数和(自身を除く): 29810980

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, 5051, 10102, 20204, 25255, 50510, 55561, 95969, 101020, 111122, 191938, 222244, 277805, 383876, 479845, 555610, 959690, 1055659, 1111220, 1919380, 2111318, 4222636, 5278295, 10556590, 21113180]

約数ペア:

[(1, 21113180), (2, 10556590), (4, 5278295), (5, 4222636), (10, 2111318), (11, 1919380), (19, 1111220), (20, 1055659), (22, 959690), (38, 555610), (44, 479845), (55, 383876), (76, 277805), (95, 222244), (110, 191938), (190, 111122), (209, 101020), (220, 95969), (380, 55561), (418, 50510), (836, 25255), (1045, 20204), (2090, 10102), (4180, 5051)]