20984970545

素因数分解:

$5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{165673}}^1$

素因数の和:165750

約数の個数: 48

約数和(自身を含む): 32636452608

約数和(自身を除く): 11651482063

約数列:

[1, 5, 7, 11, 35, 47, 49, 55, 77, 235, 245, 329, 385, 517, 539, 1645, 2303, 2585, 2695, 3619, 11515, 18095, 25333, 126665, 165673, 828365, 1159711, 1822403, 5798555, 7786631, 8117977, 9112015, 12756821, 38933155, 40589885, 54506417, 63784105, 85652941, 89297747, 272532085, 381544919, 428264705, 446488735, 599570587, 1907724595, 2997852935, 4196994109, 20984970545]

約数ペア:

[(1, 20984970545), (5, 4196994109), (7, 2997852935), (11, 1907724595), (35, 599570587), (47, 446488735), (49, 428264705), (55, 381544919), (77, 272532085), (235, 89297747), (245, 85652941), (329, 63784105), (385, 54506417), (517, 40589885), (539, 38933155), (1645, 12756821), (2303, 9112015), (2585, 8117977), (2695, 7786631), (3619, 5798555), (11515, 1822403), (18095, 1159711), (25333, 828365), (126665, 165673)]